There are “legal implications” of disobeying the orders and disagreeing to serve in the military.
There are “legal implications” of calling the glorious leader a crooked mobster.
There are “legal implications” of having banned books on display in a library. (Not officially banned, but the officials are making scary faces because someone heard that higher ups discussed something, and the librarian rushes to hide the you-know-whom and you-know-what without any specific orders.)
There are “legal implications” of discussing this and that, and posting links, when it is officially declared “illegal information”.
etc.
Comrade Stalin does not force anyone to do that himself. Regular people — you and me — do that.
If was possible to handle the case properly without bowing to anyone. If there was an immediate security danger, announce that. If legal team told you to stop working with certain entities, inform the people properly. I suspect that Linux leadership is now between the rock and the hard place because some men in suits only strongly hinted they need to do that, and now, then they acted, they don't have a single piece of paper to prove it was under someone's pressure. A classic trick to manipulate people who believe in “matters of national security”.
It is highly likely that most people who vehemently show support, and ignore the obvious “nothing to see here, citizen” details are simply trying to keep the bubble of “living in a democratic country, unlike those shitty places” intact. After all, media and politicians are 100% set on using war spectacle to sell the feeling of (in)security, and blame everything on external and internal enemies. It's the same tool Putin and company used to remain in power.