When I install Linux for friends and family the only distro I use anymore is Fedora. I have used just about every major distro, and Fedora is the only one that has “just worked” on every computer I have tried it on.
Love them, or hate them, Red Hat is by far the single biggest company in the Linux community, and their Red Hat Enterprise Linux is renowned for being stable, performant, and very well supported. Fedora is where most of the updates that make their way into RHEL are initially available, so with Fedora you get a cutting edge distro with the backing and resources of a massive corporation that employs many of the top Linux-desktop contributors.
If you want a distro that “just works” I strongly recommend you give Fedora a try.
It is misleading to attribute too much credit to a single individual, even a president. There was a significant clash of social/political forces when Obama was in office. Off the top of my head I can think of the following major forces: War in Iraq & Afghanistan, Great Recession & Occupy, DREAMers, ACA, Gay marriage, Environmentalism / Inconvenient Truth, Global outsourcing & job loss, Tea Party & the rise of militant christian nationalism. That’s the landscape in which progressive policy ambitions were compromised to death to avoid total gridlock.
It’s also worth giving credit where it is due: those auto safety and emissions regulations achieved their goal… for regular cars. Unfortunately, Republicans insisted on exceptions for body-on-frame vehicles (trucks, vans, SUVs). In the years since, those types of vehicles have steadily become the most common in the US, because they are the most profitable for the auto industry.