I can totally understand that it happens to me to MTL few chapters for series that were dead for a long time, but just taking 2 or 3 hours to proofread it is not that difficult ^^. especially if you release it publicly.
retreat is not a bad strategy, he just wasn't fast enough. Whats more annoying is how easily the MC seems to just brute force through everything. This manga doesn't have a compelling story to compensate his OPness. it becomes boring quick. Essentially you just enough the art and the sequence but that's about it.