I don't think you can be 9 games over .500 and have "shown nothing." We have a top 2 or 3 offense, for one. Our rotation did go 4-5 weeks pitching very well. Our pen did okay for the first 2 months. Our defense has improved at 3B.
Look, I agree, we have yet to "put it all together" for any meaningful stretch, but there is still 2+ months to go. I know it is hard to ignore a 99 game sample size, and I'm not. We do have serious issues. We have some in-house options like Eovaldi and long shot Johnson that may solve 2 issues. Moreland's return could help, too. A trade for a solid RP'er could also help. Adding 4 players to a team already 9 over .500 can make a difference. I'm not saying it will. I'm not saying I have any hard evidence, other than this is close to the same team as 2018, to say we are likely to be a top contender by October, but it is possible.
I know it wasn't you saying it, but even last year some posters were very pessimistic about our chances vs Houston in the playoffs. That was after winning 108 games. Houston "had a better rotation." Houston has a "better pythagorean record."
We came close in 2003, despite going 60-49 for 4 months in a row (.550 winning % that is very close to the one we have now). That team went 17-9 in September and 7-3 to end August. They were 72-55 on August 20th, which is much better than our record is now, but I seriously doubt many Sox fans had hope as late as August31st after we just lost 2 of 3 to the Yanks and were 5.5 out.
In 2004, we had a stretch where we went 43-43 from May 1st to Aug 6th. That's a very long stretch of worse baseball than we have played in our first 99 games. The sample size is almost the same. If I add 13 games on the end of that stretch to equal 99 games, they were 7 games over .500- worse than this year's stretch. There was not much hope that year, either, but we finished the season 40-15, and the rest is history.
We won the division in 2007, mostly on the strength of our great start (36-15). We went 60-51 the last 4 months of the season, including a 54-48 stretch (worse record than this year for a longer stretch).
Nobody expected a ring in 2013 from day one. We had a shorter stretch of pretty bad play by going 48-38 in one 86 game stretch- better than this year, but not by much.
All those championship teams, except for last year, looked pretty bad for very long stretches.
Let me say one more thing about our team, we've made the playoffs 9 times since 2004. We've won it all in 4 of them- once as a wild card entry. That's pretty amazing, and it speaks to our ability to step it up when it counts most. I realize those were different teams, but 2018 was not.