Not to my knowledge, unfortunately. Steam seems to solely determine on if to show that note (which it also only seems to show to players currently on a Mac to begin with) by on if there is any Mac builds uploaded, not even taking into account that there is two different generations of Mac's that are based on completely different processor architectures for which builds are not generally cross-compatible, as all our builds are not ARM based.
The only way to get rid of that seems to be removing all builds we uploaded for Mac so far and altering all internal pipelines for creating builds, which would be a resource-intensive undertaking, especially when wanting to keep the builds for our own website. Mac has never been noted in the system requirements or our own compatibility documents, though.