You seem to be a tad confused on this topic. Let me clarify it for you.
The Guardian article covers the grift that Bob was involved in. It discusses the means by which Bob took his bribes - in Gold and in cash. I guess they're more suitable for bribery. Bitcoin must not be at the races on that score 'cos as you rightly point out the Guardian doesn't mention Bitcoin at all.
Now Bob and a couple of his fellow US senate grifters were awfully concerned about
the damage that bitcoin could do in terms of the possibility of money laundering of all things. Meanwhile, Bob is taking bribes in gold and cash and not the very thing (bitcoin) that he said was ideal for illicit use.
To demonstrate further the grift that goes on in official circles, Bob
called for regulation AFTER the FTX fraud. And yet Bob (and 33% of all Capitol Hill politicians) were the very ones that enabled that fraud. They legitimized that fraud. Bob received money through an FTX-sponsored PAC. Most of these grifter politicians, have been asked to return those funds which belong to ordinary people....and yet 90% of them haven't. What's the chances that your buddy Bob falls into that category?
I'm not any political supporter of Bukele or any politician for that matter. For all I know he could turn out to be the worst head of state of all time. However, these grifters that pass as US politicians or the sorry excuse for what passes for establishment media these days are the farthest thing from being in a strong position to point the finger elsewhere. They have zero credibility.