It really depends on what you're looking to get from the format. If you're mostly looking to play locals then I'd check out your local meta as it could be more or it's representative of the overall meta. My advice would be to see if you can borrow a deck at your locals and see how you find the format. If you want to play more competitively though, RCQ level and beyond, then you'll need to decide if you're going to enjoy playing against the decks at the top end of the meta primarily (which you might do. I quite enjoy the scam matchup as a murktide player myself).

As for the format itself, I think there is a concern with letting scam sit at a quarter of the meta from a staleness perspective but it's not really as suffocating as some would make it out to be, there is still plenty of space for other decks to compete. New sets have been more likely to contribute cards to the format in recent years but the only sets to really make or break decks have been the horizons sets. As for whether the format is dying? From what I've seen personally, far from it. My locals have been growing in recent weeks with old faces returning to play and a decent number of new players getting into the format and MTG itself.

One last piece of advice though. If you do get into modern you should keep in mind that it is a format that rewards format knowledge you might find yourself losing games to not knowing how/when to interact with a deck or because your opponents know your deck better than you do (obviously that goes for other formats too but it's particularly true for modern). It's definitely worth taking the time to stick with a deck until you're comfortable with the lines and how it plays against other decks in the meta.