Im going to disagree....
He must be just a buddy that claims he can weld, not a professional welder....
Some of those beads, he completely missed doing the 2 pieces together....
That's total hamburger...
Its not a show car, it will hold, bust out the grinder....
Lol I didnt wanna criticize, but to critique I do agree a with you, they were a little on the far end of tolerance lol.
I call those guys weld painters...painting metal on with a welder is what they do, or maybe spackle it on lol.
I would have cleaned it up a little more before welding, and maybe clamped em together, push/wedged the bottom up w/ a 2x4 or something if any clamps couldnt get a bite. Sometimes I drill a hole in the top piece and fill it in with weld to the bottom piece. My OCD and love of the angle grinder would have smoothed the goop out more as well, not too much tho to keep meat on the thin metal. Most of my work is more artsy fartsy than structural, so maybe my pov is skewed.
I probably would have been compelled to fill those weld all the way in, get into my tack/cool/tack/cool etc zone.
This is all if the rig was at my place lol. If I went guerilla mobile to his place, it was nighttime and I forgot my favorite flap disc, it would look like that lol. ugly but will hold, and good enough for my buddy.
Nowadays Im so sick of welding aka glueing metal. I try to stick to clean material, ideally on a bench, or avoid welding altogether. I have a milwaukee M12 rivet gun that is more fun to me to use than welding, I'd rivet that thing together like an airplane lol...run some silicone seal and call it a day. I wanna get me a set of those rivet placeholder dealy setups.