I don't really believe this is trustless, so many 'trustless' shitcoin contracts, bridges, (insert buzzword), ... got hacked or stolen somehow. In the end somebody still controls the key somehow.

Also, besides that, what's the point of putting btc on shitcoins that have their own scaling problems (or are trusted), if you use bitcoin on (ABC) you can also just use bitcoin on Liquid.

Also things like Fedimindt bring truly federated custody with the benefits of lightning and without the need of any tx fee token today.