I would argue the opposite in that the longevity of it alone was staggering. It likely should have been replaced and/or modernized (look at the Panthers for instance where Ford did a darn decent job) but it went fairly unchanged underneath for decades. It was also the base design for a lot of other GM stuff arguably to include the Astro Vans, full size vans, 1/2 ton trucks and even second gen F-bodies used similar component parts in the front suspension/braking. It absolutely was dated but if you consider what cars were when it came out I would say it was probably actually pretty decent.
That said most if not all old cars were pretty terrible in one way or another; They look fucking fantastic though which leads most of us to forgive that.