I'd recommend against it.
I used to perform the valsalva maneuver regularly because I felt that my ears were always blocked up, especially on the left side. However, I did it one unlucky day and caused a barotrauma in my left ear, it popped weird and I started to experience extreme pain and tinnitus for about 8 or so hours. Felt like a kettle was going off in my ear, it settled over the next day but I then started to deal with a whole new bunch of auditory issues, most notably was hyperacusis / chronic pain in my left ear. It's finally settled this year and it's rare for me to feel any sort of pain in the ear now but it was about a year and a half of ups and downs.
So yeah, avoid popping your ears. It's a bad habit and there's no benefit to it, unless you're adjusting to altitude or something - even then there are safer ways to pop your ears. I mentioned this in another thread of yours but I was just sick with a cold a few weeks ago and it took a good two weeks for my ears to feel normal again, even after most of my cold symptoms had abated. Just wait it out, or use a decongestant.