Important words are mostly in the 'Asakura Soteki Waki' Vol. 4-12 'The Castle of Lies'

"The Sunomata Ichiya Castle is a fake siege castle."

I believe you have understood from the examples of Nobunaga and Hideyoshi that the siege castle tactics adopted by the Asakura family to capture Kuniyoshi Castle were not entirely foolish. However, in reality, this siege castle tactic was not all that popular. While records of Oda Nobunaga and Hashiba Hideyoshi using siege castle tactics can be found quite often, for other daimyo, while they did exist, they were not very numerous.
When it comes to siege castles, the Sunomata Ichiya Castle, built by Kinoshita Tokichiro, the later Toyotomi Hideyoshi, for the attack on Inabayama Castle, is famous, but in recent years its very existence has been questioned, so it is possible that it was a new tactic that appeared in the latter half of the Sengoku period.

By the way, the legend of Sunomata Ichiya Castle goes something like this...

Once upon a time.
Sunomata Ichiya Castle was a castle built by "Oda Nobunaga" when he was conquering the Sengoku daimyo"Saito Tatsuoki" of Mino Province. Oda Nobunaga gathered his vassals and ordered them to build a fort in Sunomata, which was still enemy territory at the time.
The first to take on the role was "Sakuma Nobumori," who declared he would build it in 60 days with 3,000 soldiers. However, when he went to the site and it was 80% complete, the Saito forces rushed in, destroyed the unfinished fort, and stole the provisions and ammunition.
Taking over the task of castle construction from the failed Sakuma Nobumori was "Shibata Katsuie" (Shibata Katsuie). Shibata Katsuie set a deadline of 60 days and headed to Sunomata with 5,000 soldiers. However, just like Sakuma Nobumori, he was attacked by the enemy when it was 80% complete.
This is when Toyotomi Hideyoshi stepped forward.
Toyotomi Hideyoshi declared that he could build a fort in Sunomata in 7 days with 500 soldiers. Oda Nobunaga and all his vassals were surprised, but in fact, Toyotomi Hideyoshi had made careful preparations in advance.
With the cooperation of "Hachisuka Koroku," who was a wild samurai, lumber cut in the mountains of Mino Province had been prepared upstream of Sunomata.
The Saito army, on the other hand, was careless, thinking "we can just go and destroy the fort again when it's near completion" even after construction began, so they didn't go to check on it immediately. However, 4 or 5 days later, news arrived that the castle was complete. They were surprised and attacked with 10,000 soldiers, but Hachisuka Koroku was waiting and blocked them. Thus, Toyotomi Hideyoshi, who successfully completed the Sunomata Ichiya Castle, rode that achievement onto the fast track to success.
And they lived happily ever after.

And that is the kind of story it is.

However, regarding this incident, which is important for both Nobunaga and Hideyoshi, there is no mention of it at all in high-quality historical materials such as the Ota Gyuichi's Shinchoki.
This Sunomata Ichiya Castle legend is a story that spread through popular storytelling and popular military chronicles after entering the Edo period. It is said that the source of this is the "Maeno Family Documents" handed down in an old family in Konan City, Aichi Prefecture. However, this document itself is considered to have been established in the middle of the Edo period, and there are opinions that there are descriptions of unknown authenticity.
However, in recent years, it spread explosively because the author Ryotaro Shiba introduced this legend in his works.

Setting aside the story of Sunomata Ichiya Castle...
Even if you don't build a siege castle, if an enemy's branch castle becomes an ally in some way, it can fulfill the role of a siege castle. Also, building a siege castle takes a huge amount of time and effort. It is effective in preventing the loss of military strength, but it is no wonder that some warlords would not build a siege castle due to doubts about whether it is worth it from a financial perspective.
(The siege castle built by the Asakura family for the capture of Kuniyoshi Castle feels like it has a strong aspect of punishment. I will detail this later.)