Epic Level Combat

[Exthalion]

Or do high level wizards just summon surprisingly small numbers of high CR monsters to battle each other since direct combat is almost impossible?

Really, wizard are held up as the examples of work breaking power. What besides tricks of questionable rulings such as locate city or which require outside knowledge not even present in the game system and DMs will outright ban like the anti osmium bomb.

What do wizards have to deserve their reputation as broken?