That would have rather more validity had the EU not studiously ignored it when the previous, pro-EU Polish government undertook similar measures.
Besides, it's the optics that are the real problem here. They are now being seen to be overtly interfering in the internal governance of a member country because they don't like its government's policies. This sort of naked attack on democratic sovereignty makes explicit to people just what an appalling shítshow the EU really is, which can only be good.
If the context is 'any time some body has to do something they don't want to it's un-democratic' then yes it is.
I'm always amused when people criticise the EU for not being democratic. Because getting 28 different countries to act as a union and reap the benefits of that union while allowing them to vote on everything and opt out of anything they don't agree with would just be sooooo easy.
Right. So you concede that it is undemocratic because it cannot be otherwise and function?
That isn't a reason why it isn't undemocratic, it is simply a reason for it being so.
Given which, you'll understand why those of us to whom the principles of democratic government actually matter had no alternative other than to vote Leave?
Glad we've sorted that out.