Battlecruisers as lancers, not line-of-battle ships

Would more German battlecruisers exploding at Jutland have changed perceptions of British battlecruisers?

Yes. It would have made the shared doctrinal problem clearer: battlecruisers were not intended to exchange sustained fire with battleships in the battle line.

A battleship is compared to an armoured fighter in a melee and a battlecruiser to a lancer on horseback. The battlecruiser can strike and disengage, but loses the advantage of speed if it remains in a slugging match against a battleship. More German battlecruiser losses at Jutland would therefore have exposed a problem with employment across the type rather than a uniquely British design failure. The analogy explains the doctrinal misuse that later made the type controversial.