Bitcoin has the most development and developers actually, no matter what eth shills say. Nobody intelligent works on ethereum. Almost no expert in crypto space supports it. BTC was given out fairy from 0 via PoW. Eth was 70% premined and sold for profit for centralized funding. Then eth was proven to be centralized (which makes it 100% unsecure) and everyone intelligent who supported it left for other options. https://www.reddit.com/r/ethereumfraud
There is almost no project worse than ethereum in this space. Eth is closer to onecoin than to any real crypto like bitcoin.
His concerns are realistic, but they are minor compared to complete centralization, huge attack surface, requirement to trust ethereum foundation not to take your money and let you use the platform. It's really pointless to even bring up eth in conversation about crypto, it doesn't belong in it.