For sure!
Therefore just a small reminder here:
Please re-read the already provided link above carefully:
“Debian is the only common non-endorsed distribution to keep nonfree blobs out of its main distribution. However, the problem partly remains. …”
So, even recommendation to use “USB stick that was formatted with a FAT filesystem” might lead to wrong impression if someone is watching from “above” what are you doing with PureOS after installing it on “other” laptop HW (who knows/cares).
And, for example, kind of basic recommendation from my side was to always keep /PureOS main repository as one and only “main” within sources.list but even that one was often misunderstood (by adding just non-free neighboring Debian repo needed for the particular firmware installation, which might be disabled afterwards anyway). Please check this post pointing to typical wrong way of usage (that needs to be avoided):