Microsoft were never bothered about negative publicity; they have had it in plenty but are so entrenched in the corporate world, and in the pre-loaded consumer PC business, that it hardly makes a dent in their business.
Yes, I know that Google do for example, although I expect the finance department run their software on Windows because Linux is not strong in that area. The film industry also uses Linux heavily. Many corporates use Linux on their file servers, even if the workstations are Windows.
Commericial office software is cheaper than the cost of training new hires to use open source equivalents.
I work for a software company. We have an application which runs on Windows, macOS and Linux. I hear more grumbles from our developers about Apple and Ubuntu than about Microsoft. Most of our users run Windows, so thats what I use for my work laptop.
With my own money, I recently bought a Chromebook, which can also run Linux applications. Chromebooks were great for my kids when they were at school, to avoid documents going missing on a laptop at home, on a USB key or computer at school. My mum is really happy with a Chromebook, to read email, browse WWW sites and watch TV.
Personally, I would avoid Ubuntu as they have form for releasing buggy code into the wild. Mint is based on Ubuntu, but has some of the rough edges cleaned up.