There are others that don't work. Kevtris has more details on why they don't work.

Chuck Rock doesn't work on the MegaSG. It's a known issue and on the Analogue side.

Where are the images from?

Immediate question is what are the track types for your audio tracks? Where did you get your images? My guess would be that the audio tracks are unsupported filetypes, like mp3.

How do you propose solving the lack of SMS support with the 32x?

Also since it was mentioned the SMS adapter from analogue is not beveled either.

How about all those Krikzz carts? Like the brand new sd2snes pro that isn't beveled or hard gold?

What does the 32x have to do with anything? Also the 32x doesn't support SMS mode passthrough so that makes it even more unlikely.

It threw me off at first as well. There are advantages and disadvantages obviously. One big one would be security of your financial data. But I totally agree it's not intuitive of what you would expect. Maybe somewhere down the road this will change.

That console has some serious problems. The mod work isn't the issue. You have actual rust on the board. I'm guessing it was submerged in water at some point. The first picture you shared shows rust spots all over.