I work for a mega corp, and a few things happened over COVID. 1) people didn't use vacation time, & are carrying forward more than ever. 2) work & personal life bled together during WFH, and many people are very burned out. We take company surveys that evaluate this burnout.
Our company has, as a result, emailed managers encouraging us to support our teams taking time off. And, also planned additional company days off.
A few theories as to why your company may be doing that. If the majority of folks all align around a few weeks during the year to take time off, it can be really great to minimize disruption & feels much better to return to your work, not feeling like you were the only off during that time, and frantically scrambling to "catch up". They may also have financial incentives for not carrying forward all of that vacation time on their books. Depending on your company rules, they may be required to pay out that vacation when you leave, so it's in their best interest financially if you take it?
I suppose it could also be a sign of trouble, but in tech, there's been lots of discussion about encouraging people to take time off, and not for nefarious/scary reasons.