From the document for selection criteria, they're basically going by the performance/results of the players in the year before Tokyo 2020. Some kind of tradition.
Truth be told, I tried to be nice by not responding. To give you an example:
Bulgaria open
https://www.tabletennisdaily.com/forum/showthread.php?21650-2019-Bulgaria-Open-(World-Tour)&p=285900&viewfull=1#post285900
Paraguay Open...
She's a mix. Her Japanese dad is a former pro volleyball player. Her Chinese mom, Yang Fei, used to be on the Bayi team, moved to Japan after retirement.
Mom and daughter
The number of events hasn't really changed that much. Even with the old world ranking, this would happen before every Olympics.
Check out XX's stats, Ito's, or Ishikawa's. Not all that different.
XX
2019, 74 matches...
XX/FZD 0-2 M. Yoshimura/Togami
9:2, 9:6, TO by Qin, 11:6.
Togami pairs well with Yoshimura. I guess his comeback over Uda in the junior boys final of the All-Japan wasn't a fluke.
In case it's not obvious by now, I avoid you like the plague as I've become allergic to noobs after an infamous engineer made the following statement.
But since I get to brag about my observations over the years I'll make an exception here.
In terms of accomplishment in singles, Hirano...