Nothing wrong with constructive criticism relating to things that do need to improve. But when some individuals start spewing hate, in the name of whatever and for whatever reason, when they have the very easy option of heading elsewhere (and I don’t mean “go back where you’re from”. Nobody owns anywhere and we are all only here b6 chance and none of us will live indefinitely), it does make my blood boil! Yes, the UK is not a perfect place, but hate and negativity won’t improve anything!
If you don’t like it here, just go on Google, research other countries, find one that you consider to be better and just move there. The funny thing is, when things go awry over there, you will then hear such folk asking the UK government to hurry up and get them out!
If progress is slow, throw in more positivity!