yes I also, unlike yourself, know the definition of discrimination. I also know that if you turn down a job because you don't like the perfectly legal terms of the contract you cannot claim discrimination! I am not giving an opinion - I'm telling you the current law regarding contracts of employment.
Funny how you are now slowly changing your argument. Oh and I doubt very much any club needs to give a reason as to why they aren't offering someone a new contract - they are under no obligation to offer a contract to anyone at all!

The 83% was a figure quoted by Watson this week. He didn’t stipulate whether that was across the club or first team players only, bearing in mind younger players may not all have had the opportunity. My eldest is not yet 18 and due to unfortunate timing in having to isolate and contracting the disease himself he wasn’t able to take up his 2nd vaccination until this week.

This era you speak of has become "bygone' pretty sharpish. Access to the internet, the Me Too movement, BLM movement, taking the knee.......and a whole lot more have arrived and accelerated change in the last 2 decades and before you say it's all for the best, these things and their like delivered a few nasty things too.
Given it is accepted that the jingoistic sabre rattling of the Brexit bullcrappers swayed enough to get leave over the line, referring to the French as white flag waving surrender monkeys is hardly a capitol offence...more of a Nigel Farage/Boris Johnstone strap Line

As it as, I used the phrase to underline the absurdity of a poster bemoaning the French Governments reaction and regulation to covid. If you choose to peer past the obvious context, then so be it 5.1025390625:5