I understand this argument, but if I had to choose right now which coin would be the best for my country, I would still go with Bitcoin. You don't get to choose which coin has the most backing, or the most diverse set of players from around the world.
But those are not important metrics for a legal tender currency. Bitcoin is a fine deflationary asset but a very bad currency.
Maybe. But it is better than the alternative? It's the quickest solution. Have a look at what happened when Venezuela ended up launching the Petro.
There are other possibilities between poorly executing a bespoke cryptocurrency and using bitcoin even though it's not a good currency. There are options that already exist which have low volatility, low transaction costs, and don't require injecting more and more energy for security. If those options don't seem mature enough (they do to me, but I dunno, maybe they're not), then a good option would be to wait.