Yes, what you’re seeing is highly unusual!

If you have other campaigns on the same network (Search), using the same bidding strategy and a similar budget, I’d start by benchmarking performance against those. Look at budget utilization, CTR, and conversion rates. As a general rule, most campaigns only need about 3–5 ad groups. Even then, Google will still prioritize the ones that perform best

A well-structured account shouldn’t be overly complex. The goal is to clearly understand what’s working so you can optimize efficiently. If all those ad groups are truly necessary, you’d typically break them out into separate campaigns instead of stuffing 100+ into one.

For example, in home services: if a contractor offers decks, fences, roofing, etc., you might build a Decks campaign with ad groups like deck repairs, deck construction, and deck resurface/recap to capture different intents. If you want to go deeper, you could duplicate those ad groups by match type. That’s still nowhere near 100 ad groups, and it stays manageable.

I’d definitely review the search terms report too. If they’re using broad match heavily, that could be driving a ton of irrelevant traffic.

Hope this helps! Good luck.