Are adapted lenses worth it?

Here is what the site says about that.

From Sensor sizes: Is full frame worth it?: For low light, events, and portraits with very shallow depth of field, yes. For travel, street, wildlife on a budget, and most hobby photography, a good APS-C camera with good lenses is enough, and you'll carry it more. Lenses and light matter more than the last stop of sensor performance.

From Panasonic Lumix GH7: Panasonic Lumix GH7: A mirrorless camera by Panasonic with a 25.2-megapixel Micro Four Thirds sensor, announced in 2024. A video camera first: internal ProRes RAW and no recording limits worth worrying about.

Quoted from this site's pages.