I'd guess that if you came up with a link[1] showing that the T540p was indeed sold with a Bay Trail processor, 'chx' would apologize profusely, publicly eat his hat, and probably come over to mow your lawn. Alternatively, if for some reason you misspoke as to which processor generation it had, you might consider making the world a slightly better place by correcting your error and apologizing for the apparently trivial bit of misinformation.
[1] Like this one, but with Bay Trail than Haswell: https://www.cnet.com/products/lenovo-thinkpad-t540p-15-6-cor...
This merited a strong reply because contrary to this allegation, the rule of thumb is to recommend a ThinkPad T or X for someone looking a Linux laptop.
You can accuse an old Porsche 911 SD of having problems with the front engine but people will be quick to point out that a) Porsche 911 only had an SC and not an SD version b) the Porsche 911 engine is in the back.