Show me a team that advanced in the playoffs(if one even made it) that matches this team's offensive rankings please. Yes, anything can happen, but I don't think it's as random as you are suggesting. The good news is that we haven't even reached the break yet, we have some fantastic young pitching and we have assets to possibly upgrade this lineup. All is not lost and there is good reason to follow this team. This division is shitty enough that we can win it even if Bieber and a few others are traded. I'm anxious to see what happens.
I went through the worst teams, by record, according to MLB.com to reach the playoffs and here are how they ranked that year per Baseball Reference:
*Note Wildcard Era
2005 Padres - NLDS Loss
26th R/G, 25th HR, 24th BA, 26th SLG, 22nd OPS
2017 Twins- Wildcard Loss
7th R/G, 16th HR, 9th BA, 11th SLG, 9th OPS
2007 Cubs- NLDS Loss
18th R/G, 20th HR, 13th BA, 15th SLG, 16th OPS
1997 Astros- NLDS Loss
14th R/G, 25th HR, 22nd BA, 22nd SLG, 17th OPS
2006 Cardinals - WS Champs
14th R/G, 12th HR, 15th BA, 15th SLG, 14th OPS
2008 Dodgers- NLCS Loss
23rd R/G, 21st HR, 14th BA, 22nd SLG, 20th OPS
Edit- I went and looked at the 2015 WS and it's an interesting contrast.
KC- W
7th R/G, 23rd HR, 3rd BA, 11th SLG, 10th OPS
NYM- L
17th R/G, 9th HR, 27th BA, 17th SLG, 20th OPS