I think that is just what happens if you live in tick-dense areas and do a lot if outdoor activities. I take every precaution, and remove approximatively the same number of ticks per season. Some places are just like that. Once, I rested with my right hand against the ground, just a couple of seconds, and upon lifting it up I noticed around 30 ticks crawling on it.
Why would you not believe it? It's normal where I live too. I definitely get dozens of bites every year and have been formally diagnosed with and treated for Lyme twice because it's pretty easy to miss one. Tick bites are very often completely painless and they often choose very discreet locations for their meal.
Keep in mind tick season is March to June and September to December (although it started in February this year because of unusual weather). That's a lot of days with "1-2 ticks" and it adds up.
I’ve never had a tick bite I could miss. They form a blister and itch like crazy for a couple of days. I wonder if the inflammatory response goes away if you get bitten too often. I know it happens with mosquitos if you get bitten too often.
I get a strong reaction after I remove the tick (like a little necrotic volcano that itches like mad and takes about 18 months for the blemish to disappear completely). While the tick is there, I usually feel only nothing and find them by inspection. Tick checks are your best defence.
How do you get that kind of numbers in the first place?