Unless you make a huge pile of money, they wont care or say anything. The legal statements in the "contract" can be interpreted many ways. And they will be.

If you are using suno to "create marketable content" then it's not "writing".
Plus, this is all online, so the folks running the show may change the rules because someone offers a bigger stack of money. I know I can't afford to sue anyone and the water is getting muddy by the minute.

It's interesting to play with and has some great uses, but I still prefer my guitar and a notebook. I also prefer live recordings over anything I've done in the studio.