How much is your data worth?
The whole point is that IBM, and now Lenovo, are doing what they can to make it extremely difficult to break drive security. Resetting a power-on password is no big deal. It doesn't unlock any data, it's a very superficial level of security.
I would put forth that, if the confidentiality of your data isn't worth more than the price of your laptop, you probably shouldn't set that password. There are DIRE WARNINGS that inform the user of these consequences prior to setting the supervisor password. No, a field tech can't do anything with the encryption chips on the system board. IBM and Lenovo seem to be of the mind that they won't even trust a board once they've messed with jumpering and resetting the chip, so they won't even mess with trying to "rehab" boards with that password set. The selling point is that it's so non-trivial to reset one of these passwords (which would enable the recovery of the data) that your average burglars or laptop snatchers are simply not going to have the skills to compromise the data. They might be able to sell the machine for parts, but your business or agency is likely not going to be embarrassed by having all your clients' or patients' personal information sold off. Your company secrets are less likely to find their way into the hands of your competition. Your data is really as safe as it's going to get on a device that is ostensibly going to be exposed to leaving secure facilities and is rather easy to walk-off with.