That's not a VAR issue. IF the PiGMOL really wanted to deal with dissent they could easily bring it up at their next referee's meeting and compel their match officials to apply the LotG as written:
WARNING (repeated or blatant offences should result in a caution or sending-off)
- minor/low-level disagreement (by word or action) with a decision
CAUTION
- dissent by word or action including:
- throwing/kicking drinks bottles or other objects
- action(s) which show(s) a clear lack of respect for the match official(s) e.g.sarcastic clapping
- excessively/persistently gesturing for a red or yellow card
- excessively showing the TV signal for a VAR ‘review’
- gesturing or acting in a provocative or inflammatory manner
- persistent unacceptable behaviour (including repeated warning offences)
- showing a lack of respect for the game
SENDING OFF (Two cautionable offences, or:)
- using offensive, insulting or abusive language and/or action(s)
A zero tolerance approach would sort the problem right out.