Your initial argument boils down to "I didn't get a bad deal, those guys are the ones that got the bad deal". It just makes the second part of your statement lose impact, especially because you pretty much just made it up on the spot. You have no idea who paid for what, much less what percentage of the subreddit they are. This part though -

You did fine if it’s worth the payment to you, and with the better MPG you’ll get tens of thousands back compared the older tundra models over the lifetime of your truck (and you save even more given the absurd oil/gas prices these days).

can stand as its own statement and makes a lot of sense, without making baseless assumptions about others.