It's a fair comparison
We have seen a decent amount of players with poor plate discipline age harshly or not live up to big contracts. I mean it's not rocket science. Jones, Javy Baez, Castellanos, so many more.
Adam Jones was comfortably worse than Bo though. Through age 27:
Jones: 4.6% BB, 19% K, 109 wRC+, 17.3 WAR, 3658 PA
Bo: 5.7% BB, 19.4% K, 122 wRC+, 20.0 WAR, 3292 PA (Bo would have 22.22 WAR if you equal his PA to Jones')
In the last two years Bo does have BB rates over 6 and his K rate was an elite 14.5% in 2025. He also has places to go on the defensive spectrum, 2B and 3B, which have more value than a corner outfield spot which is the only place for a CF to go. I mean Bo can age just as sharply but he would then be a 105 wRC+ 2B/3B and not a 95 wRC+ LF like Jones was.
I wonder if people overstate Bo Bichette's plate discipline issues. In 2024+2025 combined, minimum 900 PA, if you sort hitters by BB/K lowest to highest, Bo is 64th out of 155 or 41st percentile. That's not horrendous!!!
Yes his Swing% is much higher (13th out of 155) so his ability to avoid Ks and get some BBs is still predicated largely on his ability to make contact
If you do the same search for Adam Jones in 2012+2013 he was second worst in the BB/K department out of 158 hitters.
Javy Baez in 2019+2020 was 3rd worst.
Castellanos 2018+2019 was 23rd worst out of 151, that is 15th percentile.
Bo might be unfairly criticized because he is hard to comp correctly. I think you need to sort for his warts and positives. If you look for players who:
Had BB rates under 6%
Kept the K rates under 20% on average
Hit for some power
Had a track record of quality hitting (near 100 wRC+ or better with consistency)
You are going to pull a comp list like this:
Adam Jones
Alex Rios
Lourdes Gurriel Jr.
Howie Kendrick
Brandon Phillips
Eddie Rosario
Pudge
Someone like Castellanos is close but the Ks are too high. Someone like Trea Turner is close but maybe he walked a bit too much (and his legs are a huge differentiation, anyway).
If he ages like Kendrick or Phillips, he's easily worth 8/$200. If he ages like Adam Jones he's $70m underwater. If you are the Blue Jays you want him in the middle I think. You don't want that 8th year, or you want the AAV to be more like $170m.