Let me share with you my personal experience. I use mesh mask for couple of years now and I had no issues. There where few drawbacks like reflections from the sun making it more difficult to see outside but not a problem indoor.
They during pandemic we played one game where we had to wear masks underneath and my glasses were steaming non stop. so I took of my glasses and play the round only with mesh mask. CQB site, sneaking on the dark staircase... To make long story short I got shot at close range in my face (not the first time and not the last) but this time unfortunately the other player or used low quality bb's or I was unlucky as the BB cracked on impact and few shards did hit my eye. Painful as hell. And I call myself lucky as it I have no permanent damage but this experience made me much more aware of risks.
Again if you wear glasses (as I do) then mesh mask is more than ok as long as you have this secondary protection level
p.s. couple of years ago I remember that one member of this forum has shared a pic of him in A&E with the BB shard stuck in his eyeball from similar accident I had. I believe he was ok afterward.