Not mutually exclusive.
The first is a message to beyond the borders. In reality, pragmatic, and/or realistic conclusions will have already been mostly decided upon, according to what works locally and bloc-wise for those in power, whether pro-Putinist Russia or anti-... But there may be still some private hedging of bets at the fringes...
The second is trying to get a message to Putin, and the house of cards he has 'built'. If they can pull a few of the staples out, rip off a bit of the sneaky sellotape, etc, then it shows up the rest of the structure. Yes, giving him Kim Jong Un levels of voter-support (all but an unprecedentedly high 0.13% of voters supporting him!) also ridicules the process to the outside world. But I've never been a fan of the "don't take part in these elections if you don't like how they're run" approach[1] that some regimes' oppositions go for. Putin's undoubtedly winning anyway, by hook or by crook (or even just by Vetinari Job Security), but every vote against erodes the internal credibility that little bit more. A lack-of-votes-for only really adds to a feeling of apathy.
Perhaps. Going by what I know of traditional roots in the Soviet-era psychology factors, and the post-Soviet ones, etc. (Which
might be less than you actually know, from an actual former-Soviet state, I'll admit..
)
[1] Tricky, though. Is it easier to ballot-stuff to bulk up all the 'missing' votes or to just tactically miscount the 'wrongly voted' ones, if that's what you're worried about and have free reign to do whatever you want..?