I don't mean to break up the circlejerk, but it feels like there has been quite a significant realignment of Club/International Scheduling from European Rugby over the past 5 years.
European clubs shifted their seasons to accommodate for the changing of the June International Window to a July one about 4 years ago (which may have gotten lost in the COVID shenanagins) which theoretically allowed for Super Rugby to run its course as a single uninterrupted competition instead of resuming after the tours.
URC and Premiership, have reduced regular season games from 22 down to 18 games, and the EPCR competitions have been reduced from 9 games down to 8.
The Top 14 semi regularly played its final series deep into June: look at the 2015-16 Top 14 Season, where the final was played on the same weekend as France's 2nd (and final) test against Argentina on the weekend of 25/26 June, now the latest the final is played is that last weekend in June: while the FFR and other Unions may choose not to select players due to fatigue/workload/lack of time to train with the squad, they will be "available" to play without a domestic conflict.