The implementation of it has failed.
What are your criteria for “has failed” compared to previous seasons where it hasn’t been used? E.g. are you happy for goals where there is offside in the scoring or build-up to stand?
“Long story short” might allow you to simplify a complicated issue, but are you really happy to dump video assistance which has helped loads of other sports enormously? What happens when* it’s re-implemented after your arbitrary period of withdrawal and investigation. Is it to be re-withdrawn as soon as Chris Sutton starts whinging about it again on 606?
*I say “when” because I’m convinced it’s not going away. It might even lead to some rule changes on offsides, handball etc. But hey, HOORAY! rules can be changed. It’s happened in other sports post video introduction. Although, I must say, I miss my team being able to waste time by passing back to the keeper for the last twenty minutes of a game.