Interesting thread and have enjoyed the comments. My 2 cents on dating apps.
I'm a 45 year old, fluent Japanese speaking Caucasian with a good job. Over the past 4.5 years I've had three long term relationships with 23-25 year old Japanese girls, all lasted a year or longer and all girls were 7s, one probably an 8-9 on a good day.
All three I met in real life in various settings.
In between these relationships, after break up, I used the apps to try and meet new people. Inevitably as a mid 40s, there's almost zero chance to connect with mid 20s since regardless of my looks, the age number stands out and girls will simply, and sensibly, choose younger guys.
When I did meet girls in my selected age range, they were never as good looking as their photos and many times down right catfishing IMHO, using filters to slim down etc. I only had one exception to this when I met a model-level Japanese girl off Bumble and we had a two month fling before she went back to her ex.
Interestingly enough, out of the three girls above that I was in long-term relationships, the most beautiful of them (we were together for two years) told me she never used dating apps - probably because she was always getting hit upon in real life so it was unnecessary for her.
Just my two cents.