This is the most reckless advice I have ever heard from anyone anywhere in my whole life.
I have, unfortunately, frequently used pest control specialists. They all say the same thing. Rats and mice are easy; squirrels are hard; wasps are ****ing scary and agressive.
Total BS.
Just perpetuation of a totally lunatic myth.
I pick up wasps and bees - gently done they are absolutely fine. I have stood next to a wasp nest and faffed about at the entrance - not a problem.
Pest controllers usually know very little about what they speak - based on personal experience.
If anyone is allergic - ignore the above.