>>556062392x weakness is fine imo, it helps curb threats. Mew vmax should've taught people this. Making the meta healthy in the process, as it's more innovative trying to tech against other decks than just running the generic beat all cards.
Like if that meme format GLC can combat a full deck of type weakness and not just kick the bucket, having the odd type weakness match up sometimes in regular play is fine. If they've added type techs against you that's nothing to cry about