Interesting to check out: https://bitcoinmagazine.com/technical/postmortem-on-the-lightning-replacement-cycling-attack

As my father used to say: 'Sometimes what seems like a tidal wave is just a fart in a bathtub'.

As a reply to your last sentence, I think the author meant: 'what if the Bitcoin protocol was designed as ASICs resistant from day-1'? I might be wrong, but I see this post as a thinking exercise.

Also, don't most ASICs allow to switch between different PoW chains? If so, they could technically hop to other currencies, they just don't do it because of Bitcoin's unique selling points compared to other shitcoins.

Finally a real discussion topic on SN, how refreshing. I don't know enough about RGB to answer your question, but you can check this website. https://www.rgbfaq.com/

I am not sure if something like that would be even legal in your country, but maybe there is an option to test this out. Far from being the most efficient/scalable way to run this, but you could start small and do it manually for a few users, just to see if it gets traction. Later on, if you see that there is a market for such service, you can ask around to build a proper automated webapp with API integrations etc.