It’s been 5 years.
4 since we knew these weren’t necessary.
Why don’t airports remove them? 
Discussion
Because it's more work, and effort to remove them when it's just easier to let them naturally degrade overtime.
They'll eventually wear off as they get stepped on, exposed to the sun, liquids, floor cleaners, etc.
Also they are giant steps. And so close to the wall lol
Maybe they didn't remove the rules. They just don't enforce them anymore. Until the next pandemic...
Have you seen most airport employees? They could give less than 2 fks😆
I love those things - a brief respite from the stenchy hoard of shit breath and BO - Pig-Pen is not the exception out there...😀
They still like it 🦠
That’s your job. I always remove them when I see them