Leica is an iconic brand and making politically heated ads is a bad idea: showing up with a Leica following ads like this will put it's own customers in a situation where they will be associated with the company's stand, and that is dangerous; both for them (the customer) and the brand.

Banning the name of an important technology company which is actively present in it current smartphones, lenses, science, etc, will makes things way too complicated.

Youtube(r) removing the ad, besides being a coward act, will only trigger the Streisand effect.