Am I shooting myself in the foot if I'm learning dotnet on Linux using Rider?

I'm terribly sorry for the dumb question but I'm probably a rare case of Linux user who loves working with C# and .NET up until now, and while I'm talking with others and apply for jobs all I see are "Visual Studio knowledge", "Microsoft SQL Server". I once asked during an interview if I'm allowed to use Rider and they had no clue what Rider is.

This isn't some career advice question on whether C# is the right one for me, or if there are jobs near my area because I can see them. However, most of them are on .NET Framework since they're Microsoft houses, and I feel like stating that I have Linux knowledge and appreciating different than usual tooling will either make me sound like some sort of tech snob, or they'll assume that I can't work with their tools and get -1 on that.

Edit: A word

Edit 2: Decided to switch to Windows because I'm still a junior and cannot afford to miss job openings due to lack of exposure with Microsoft's ecosystem. Thank you all.