One can both believe in bitcoin for the long term and support banning crypto related ads on a platform. Especially if the ban is targeting ponzi schemes and scams that add no value to the crypto community in the first place.

It would not surprise me if Twitter joins the other social media giants in banning crypto ads.

However, it'll be different as the attitude the CEO has towards crypto is different compared to others. He seems to be interested in investing in bitcoin and for that reason, he may not actually ban these ads. Even if they do ban it it honestly won't surprise anyone or affect the market that much.