>solar technology supposedly keeps improving
>the only DIY small solar elements that aren't those huge roof mounted panels seem to be permanently stuck in the 90s in terms of performance and do not fucking improve over the years at all
????
Why

I guess they only make them for those cheap garden lighting slops and not for DIY tinkerers. That you can get them individually for DIY stuff is probably just an afterthought and those are just originally meant for garden beacons