It's likely that this fact checking will also go through a small spike of people tweeting the phrase on purpose to get their tweets tagged, like this user may well have done:
If anything, the move highlights just how satirical the actually serious claims that 5G causes the coronavirus appear in the first place. YouTube started removing conspiratorial videos on the subject back in April and some health officials have had to publically denounce the links after people started burning down phone masts around the world.
We know it’s a stressful time and there is a lot of misinformation out there, but please don’t burn down a phone mast. 5G doesn’t cause coronavirus, and aside from committing a crime you’ll ruin a whole area’s mobile communications, something that’s doubly important during the time of a pandemic.