You assume incorrectly. I have been filing taxes for 24 years, and for most of those years I have done it myself.
GOP politicians may say that they want tax filing to be easier or cheaper. However, they work behind the scenes to ensure that it never happens. And you have correctly pointed to a perfect example of this phenomenon. The GOP said that they would make tax filing simpler and cheaper if you just supported their huge tax break for the wealthy and corporations. They gave them their huge tax break, but did nothing on the postcard. Raising the standard deduction arguably made filing simpler, if you are the kind of person who takes the standard deduction without first totaling your eligible deductions to see which is greater. I think most middle class Americans do not fall into that category, as we typically have many eligible deductions and it would not be prudent to assume the standard deduction is greater than itemized without verification.
If you had done your research, like, at all, you would have learned about Grover Norquist, his "Taxpayer Protection Pledge" that nearly all GOP candidates take, and "Americans for Tax Reform." The ATR opposes all efforts to make tax filing cheaper, simpler, or more automated.
But conservative anti-tax activists and Republicans in Congress not only disagree with their beloved Gipper, they want to kill return-free filing before it ever becomes a reality. Grover Norquist’s Americans for Tax Reform and others argue that such a system would be coercive; “If you’re a typical American and you get this packet from the I.R.S. that says, ‘Here’s what we’ve determined your liability is,’ no one is going to challenge it,” ATR’s Ryan Ellis told Manjoo.
It works well for keyboard and mouse. Audio is flaky, I'll grant you. I use a wireless headset with a 2.4ghz transmitter that is not bluetooth to avoid BT latency and other issues.
The point is not that Windows or Mac OSX has better bluetooth functionality. The point is that a major release of a desktop OS whose above-the-fold sales pitch is improved bluetooth functionality is clearly not competing with Windows or Mac OS. Those OS's bring bring major UX improvements and new first-party software with major releases.
I use Linux on the server, where it excels. I have numerous software applications running on hosted Linux servers, applications running in Azure cloud running on Linux ASE's, and a couple applications running in a Kubernetes cluster that I manage. In addition, I have a homelab composed of several Proxmox hosts running a number of Ubuntu Server VM's. I do not use Linux for the desktop because every time I have tried, it has always been a more painful experience than using Windows for my primary use cases:
And what FUD? Compare Mint's announcement to an OSX release announcement and you'll see what I mean. Mint releases are still focused on basic, table-stakes functionality like Bluetooth, thumbnails, and right-click context menus.
Waste not, get your budget cut next year.