"What? Gosh, it's not like the internet to go crazy about something small and stupid..." (Family Guy)
Being familiar with this particular YouTuber and his style of commentary, I'm fairly certain his tweet wasn't meant to be taken too seriously. The original Lara Croft was rather busty compared to the new one, and he commented on this in his usual style of humour. However, this naturally doesn't register with a lot of people, and the gallant knights and morally superior denizens of twitter must flock to the rescue by smugly answering his rhetorical questions and signalling their virtue instead of just letting things be.
Such a freaking overreaction.