I have a Ruger Mark III, and it's an accurate pistol (though not very hard to do when you have a fixed barrel), but the cheap, welded sheet metal grip frame is garbage, and it's a pain in the ass to take apart. The SW22 is one screw to disassemble, in contrast.
Respectfully, I disagree. That sheet steel grip frame dates back to the original Ruger Standard Auto in 1949, and it isn't cheap at all.
It's very thick steel, carefully made, well-finished, and not the least likely to ever wear out.
In fact, today, with the wide acceptance of pistols made with polymer frames, and high quality and expensive centerfire pistols using stamped and welded frames and slides, it seems an odd criticism to me.
The Pre-1996 Sig-Sauer P226 used a slide assembly made from a heavy gauge steel stamping, with a welded-in breech section, and uses a lot of stamped internal parts even today. I hardly think that anyone would call a Sig-Sauer P226 "garbage".
And of course, the PPSH and AK47 all use(d) steel stampings in their receivers and action covers and were extremely well-made and very reliable firearms. And, lets face it, there are numerous other high-quality pistols that use stamped-steel technology. Heckler and Koch being just one example.
And, as far as the disassembly being difficult, that's debatable.
You drop the magazine and clear the pistol and drop the hammer.
You flip open the lever in the mainspring housing, tilt out the housing and pull it down and out.
You push the barrel/slide/bolt group forward off the frame.
You dump the bolt and recoil spring out the rear.
You're done, and no screws to unscrew, and no tools needed.
Look at some You-tube videos like "Ruger Mk. II & III - Diassembly/Reassembly EASY" and see for yourself.
The main thing, I think, is that it's an old school design, which in the jaundiced eyes of many younger shooters, makes it automatically crap. And, nothing could be further from the truth.