Even the most optimistic fan doesn’t think that the Jays are serious World Series contenders this year. But I believe that it’s too early to blow it up. I think the desire to rush to rebuild is driven by a worry that it won’t happen when it needs to, and that we’d experience another long period of mediocrity.
If this season is as bad as last season, i.e. injuries, prospects not developing into contributors, older players declining, and a losing season, then a rebuild is much more likely. However, I don’t believe that is inevitable - and if enough is shown for a core of players to be built around we have the bonus that Bo and/or Vlad could be ready as early as 2019.
But it’s the right thing to do to buy a bit of time to see if your team is ready to make a step to the next level in a year or 2. If we’re not, then we haven’t added any mega contracts or traded away any more significant prospects.