Lichess analysis computer considers my f4 move as inaccuracy

I reached this position that checkmate is impossible for both sides. Lichess didn't call it a draw so I flagged my opponent. : r/chess

How inflated are the online chess ratings offered by lichess.org? - Quora

What is the Definition of Mistake in analysis check - is it really appropriate?! • page 1/2 • Lichess Feedback •

Proof why is better Lichess.org during Analysis - Chess Forums

TeoKajLibroj's Blog • How I accidentally won 2nd place in a chess tournament •

Is chess theoretically solvable? In other words, can white or black guarantee victory or guarantee a draw if both sides play perfectly? - Quora

Cheating in chess - Page 93 - English Chess Forum

ChessBot Blog - How to detect chess cheat

chess.com analysis of the same move in back-to-back games : r/chess