ya, that blue stuff is too wide and too weak! maybe good for a rim designed for a 1 1/4" tire and 60psi, but inadequate for a typical road tire...

i think it's obvious from the pics that the holes are unnecessarily large. that's the hole (!) problem.

i don't see rhe reasoning behind such large holes. maybe it's a requirement forced upon rim makers by robotic wheeling building technology. the timing is about right, in that i don't recall this being a probem about 10 or 15 years ago. if indeed, that is when robotic wheel building commenced in earnest.