I must be a terrible person...
I don't. The part about the size is absurd and totally stupid, for example.
For some others, these updates created a perception of the lore becoming more homogeneous and bland.
Not only the lore, but the characters as well, PCs and NPCs both. Once more, this is a fantasy world, and species/races are NOT equal. Will you insist that a Goblin is the same as Mind Flayer ? That he needs to have equal stats because otherwise it's unfair and racist ? Yes, you do, and that is indeed the way to utter blandness in what I can not even, in all honesty, call a fantasy world.
One of the other RPGs I love is Runequest, where you can play incredibly varied and rich races, where their race/species divine origin, their runic/magic connections, and their history both before time began and since then has had a great influence on their culture, which are varied, rich, vibrant. This is way more interesting to me than "people should only be allowed to play things that look like human in various funny hats because of their different cultures/factions because otherwise some people will be offended".
In Runequest, some races are way stronger, way more intelligent, way larger and/or robust, and others are weaker, more stupid and/or smaller. But these characteristics have shaped their culture and their outlook in very specific ways, and make them way more interesting, in particular when put in play. The Agimori are taller, stronger, resistant to fire, and extremely powerful individuals, and the Morokanth (who are weaker "tapir-men") eat "herd men", a trait that seems disgusting but that has its origin in the god time when they were more clever than some and earned that right, and this is rightly respected and feared even by the Agimori. These are not only humans in funny hats, there are cosmological, mythological, mythical, historical reasons for the differences in their species/races, which in turn have led to both similarities (they are both nomadic tribes of the vast plains of Prax) and irreconciliable differences in their cultures, leading to sometimes alliances and sometimes feuds. So when the PCs are asked to arbitrate as to whether the Morokanth should be allowed to eat two thieving Agimori, they have to take all that into account, as well as the current political and influence implications of their choices. This is what I want for my fantasy species/races, way more interesting than if it was a 7 foot tall halfling and a 3 feet tall goliath arguing about political correctness.
As you seem to have no problem calling people who disagree with you partisans of racism, I have no problem telling you that even moderately mature gamers know how to make a difference between the fantasy species and races that they play and their every day life, and that it is way healthier not to mix fantasy and reality. I have been playing D&D for probably longer than you have been alive with all ethnicities and mixes, on most continents, with all genders and ages, using strong racial/species stereotypes for our characters. And I find your continuous campaigning and slandering of proponents of alternate, richer and more mature views extremely insulting. Please take your crusade elsewhere, or tone down your vocabulary and accusations. Or even better, realise that a fantasy world can be way richer and more interesting because of all the differences in races/species as well as culture.