I think you might have skimmed over the methods, but think what the OP was trying to say is:

Concentration: 300 tea bags / 600mL = 1 teabag per 2mL (175 tea bags in one 350mL cup of tea, doesnt appear typical?)

Mixing: 750rpm × [1m/60s] = 12.5 rotations a sec (Awfully fast to be stirring tea, constantly)

Incubation time: Not specified. (They could have left boiling overnight?)

There seems to be many points about the methodology that raise eyebrows. Maybe it’s ok if you want to use this method to purify particles for structural analysis or test toxicity on cells, but it doesn’t seem fair to present this as “release of micro/nanoplastics (MNPLs) from polymer-based teabags into the aqueous phase during typical usage”, as the amounts seem exaggerated.

No sure about that. While he was alive he could do things/get stuff done to him which would get reported in the news. Getting poisoned by Novichok, getting arrested in a Russian airport, disappearing and reappearing in an Arctic gulag – all of these things show up in the news cycle, giving us constant reminders of the how bad it is in Russia. Now that he’s a martyr, I guess his name will disappear from headlines until maybe the anniversary of his death.