My manager is discouraging me from taking 2 consecutive weeks off. Is this common for an office job?

Context: Full-Time Senior Product Designer for a Midwest bank.

I asked to take time off from 07/23-08/06 and this was my boss’s response (exactly copied and pasted):

“Hey - and sorry I didn't get back to you about the vacation. That's fine if you have something already planned - but just wanted you to know that it's fairly rare that people take 2 weeks at a time. Usually it's just one week at a time. If it's possible to split the time in the future that's usually best, In my 17 years I've only taken that long once for my honey moon. :)”

My official PTO policy is flexible with a range of 15-30 days. But there is nothing that states anything about taking 2 consecutive weeks off.

Going forward, I won’t be taking 2 weeks off in a row at her recommendation. Is this common place for most office jobs?