Bill Zebub
“It’s probably Matt Mercer’s fault.”
Yet, knowing all this, you claim that you could counterspell my wizard all throughout important encounters? Either you're building the encounters to literally counter the wizard, or you probably aren't countering the wizard.
Sure, it works both ways. But having a wizard in the party is a pretty normal state of the game. The classic four man party includes a wizard. Including spellcasters in every important encounter whose role is specifically to neutralize the wizard is telling.
It's one thing to build challenging encounters. That's good. Having to build encounters in such a way to specifically challenge one character is not good. That would be like having Heat Metal cast on the fighter in every important encounter.
Whatever, man. Build encounters however you want. I'm not going to argue if you want to keep putting words in my mouth. I try to make sure everybody is challenged in the important fights, and set up lesser encounters so that each player has some chances to feel like a god. But you do you.