I would argue that ASM isn’t “powerful”. It’s direct. You can access advanced features of a CPUs architecture with the trade off limited portability. Sometimes it’s necessary but power comes from being able to express complex control and data structures in a concise and readable amount of text.
The subjective topic of what “concise and readable” means is where the language wars come in.
Promoting Mastodon isn’t even a tertiary goal. It’s just an “also encourage”. The primary goal is fundraising for a political candidate.