You are confusing apples with oranges.
"With a Formic Acid cell (or syngas) there is discharged fuel to be collected and returned to the fuel supplier for recharging. "
Mvtg-Syn gas from the Mvtg-ERC is part hydrogen, I wonder if Plug could use that, or if Mvtg hydrogen might be more cost effective than Plug hydrogen?
The Mvtg fuel cells can run on formic acid, whose waste product is CO2 gas. Plug's hydrogen source is from burning and extracting hydrogen from Ch4 methane gas, that both leave behind a larger CO2 foot print than Mantra's formic acid that was made from waste CO2 and solar power.
The newest iteration of the Mvtg fuel cell uses formate salt, the by product of energy production using the formate salt is a product itself that can be sold at high value. potassium formate, or using the Mvtg ERC it can converted right back into the formate salt fuel for the Mvtg fuel cell.
The Titanic iceburg writing is on the wall for PLUG!!!! Plug fuel cells cost 5 times more than the new kid on the block's fuel cell.