Tatsuro Taira is in the UFC! Rei Tsuruya is in Road to the UFC tournament at Flyweight too and Kamikubo and Shin Haraguchi in the FW and LW tournaments. All these guys are the best of the best of the up coming Japanese talent. Rinya Nakamura signed to the UFC too of course and he's an amazing talent, basically Japanese Bo Nickal or better. I believe Makoto Takahashi will get signed he's only 22 and wants to be in the UFC, there's rumors he took the Rizin fight to finish his pre-existing contract so that he can sign with the UFC and other rumors he signed a 1 fight deal to stay busy before the contender series. The UFC has done a bad job with Japanese talent historically but also Japanese talent in the west has just largely done bad for a few different reasons they seem to now be addressing finally (being undersized, lack of wrestling base, too inconsistent with wins and losses) I've always felt Japan viewed MMA as less series compared to boxing, Judo, wrestling, sumo, kickboxing and more similar to pro wrestling in that it's performative and a spectacle. These up coming Japanese prospects seem different though and I'm hopeful it will translate to success in the UFC, the UFC seems to he aggressively signing top Japanese talent again as if they notice this.
Ones 135 is their Flyweight and Moraes in the past fought at 125lbs, jts just the rehydration clause. Regardless I don't think Moraes would ever fight for a belt in the UFC at 125 or especially 135 personally.
I don't think Askarov was the best in the UFC, Kai upset him and that draw should have went to Moreno, since Moreno has improved a ton and Askar has stayed the same. He's a solid top 5-10 guy but I think Askar would struggle with a lot of the very good grapplers like Nascimento, Tagir, Mokaev, Taira etc.
Here's Azamat Kerefov Tapology page, he's actually fighting Askar Askarov soon so we will see what's what. Got the R and F mixed up in dyslexic.
https://www.tapology.com/fightcenter/fighters/136149-azamat-kerefov
I personally think Flyweight was more shallow back in the early to mid 2010s but I hear where you're coming from, I think them getting rid of Mouse and Horiguchi made the division lose a lot of integrity and Lineker becoming unable to make the weight was tough and a lot of other subsequent things. I do currently think overall flyweight is better now than then, even if not by a lot, honestly the division was then and is still now super shallow, being ranked top 15 out of 35 fighters is nearly flipping a coin. The division within the sport has grown tremendously but it currently is neglected by the UFC but they're finally fixing that.
You live in your own world, you have your opinions and stances you'll stay rooted in that no matter how much discussion it won't change. I have similar issues with some opinions, sometimes it's better to identify those things and work around them rather than constantly trying to argue them. We don't have to agree on everything. It isn't a bad thing, having your own opinions means you actually have something to offer.