If Mozilla was considerate to its users, which is not, it would have not pushed this Proton update to coincide with the release of the last ESR.
Did you think all those millions from Google were just for the search option?
Sears had a similar experience, destruction from the inside (CEO) by bleeding the company’s cash (dividends), while stores suffered from a lack of merchandise (people moved on).
No wonder Mozilla spends so much energy and resources in failed/useless projects, connect the dots.
For the moment, still using FF ESR 78.15.0 and if I need more security I use a sandbox or Vivaldi.