SUI is just another fancier Solana, which is a fancier Etherium, which is still not hard money. Mostly narrative, little substance.
Your kid is wrong on his analysis. Trade that XRP for sats.
Discussion
I do have questions about XRP still, as to why a product of another company will trade independent of the company?
That is a good question to ask.
At the base of it, asking "what is the value here?"
If XRP has such a good ledger, why would companies/banks/individuals choose to use it over one that is truly decentralized and permission-less? I'm not sure how they make a better case to be used as a value transfer mechanism over Bitcoin. It seems to me that it will continue to trend down over time in BTC terms.