I don't think it's the end of the world. I just think it was stupid, entirely stupid. You're at Juve, you have the transfer budget you have, make the best of it. He didn't need to spend so much time whining about it.
Aside from this, the way we approached the Bayern games a couple years ago, tactically speaking was with the idea we just wanted to lose by a respectable amount.
Hell no. We gave our all against Bayern but were completely out played and that broke our spirit. We did not aim for a draw or a respectable loss, the momentum was very high after beating shaktar, chelsea and thrashing celtic and everyone thought we had a chance. Mourinho said we are the team that scares him the most in the CL this season. Bayern put us in our place despite our best efforts and thats why Conte's comments where not unfounded. They were very much superior to us at our best.
Conte's failure in his last season was in regaining the momentum that we used to have. Even if Sneijder hadnt scored his goal or the weather was better and we made it out of the group stage last year, we never displayed the fresh attitude of an unstoppable force that we had since Conte took charge until then. We were shaky at the back, wasteful at the front even though Tevez, Vidal and Llorente had no problems scoring at all in Italy and our defense was impenetrable.
I do agree on one thing, Conte should not have given up and should have been patient. You dont meet a Bayern, Madrid or Barca everyday and when you do it is extremely rare that they play at their absolute best like they did under Heynckes. This Bayern in particular was too good, but normally the big teams arent THAT good and so are beatable. They were a one of a kind on probably their best ever season and we still did better than Barca.
Second, if he had stayed, Conte would have had the opportunity to pass the group phase this year and prove that 2013 was just very unlucky in the CL. The fans that were against him would have went back to praising him.
Third, the club is steadily growing financially and he could have continued to do well in Serie A and done better in Europe. Building a dynasty takes time especially that Juve was rebuilt from scratch.