It was not breaking the seal, no. One example- there was a big issue about Hounder's oils in the chapel. There were public and semi public online discussions through various social media outlets amongst the laity who attend(ed) the chapel, with the "blind-obedient-shut-up-stupid" on one side and others who did not want the invalid oils imposed on them nor their children for the confirmations and baptisms. So, the trouble makers (aka sedevacantists) were blackmailed to be quiet about it or else there will be no more access to sacraments in general for them. So naturally, they did no want any more part of that nonsense.
The issue of Hounder’s oils WAS a matter of true positive doubt. The oils either were holy, or they were not. This is not the type of controversy I’m referring to, where the issue of one of actual sin. Depending upon who you are and your state in life, speaking out may be required.
Say what needs saying and let the chips fall where they may. If you lose Mass and Sacraments, try another chapel, commute, relocate, go to the Japanese model, or the model of the early days of tradition. Go it home alone, Live-stream Mass with your missal, or simply read the missal, make a spiritual communion, or set aside time for Our Lord.