Yes - but not everyone owns every wide angle lens that's available in the M-mount.
In my case - I purchased a 7Artisans 35mm f/1.2 Mark II for my Sony a6400, even though I have the Sony 35mm f/1.8 prime, which is a very acceptable performer.
The reason for the purchase: the Sony OEM prime lacks a distance scale.
The 7Artisans lens not only offers a distance scale on the focus ring - but also a depth of field scale on the lens barrel. Bottom line: I can set the a6400 to its aperture priority mode and do some zone focusing street photography.
The good news: I like the direct connection of the manual focus ring these lenses offer versus the focus by wire feel of the OEM lens.
Bad news: To me at least, these manufactured in China after market manual focus lenses remind me of the Soviet lens rabbit hole. My gut feeling is there are going to be some dodgy ones in the mix.
That said - I just purchased a Kamlan 21mm f/1.8 -