Lots of us have a different opinion on the usefulness vs. risk of running random and often deliberately hostile JavaScript in your browser, see the the popularity of NoScript, and how many of us use uMatrix with JavaScript turned off by default. Most of the time I follow a link where I don't see anything, I just delete the tab, most of those pages aren't likely worth it.
"Mostly affect one company" is something completely unproven, since AMD is not getting subjected to the same degree of scrutiny, AMD has a minuscule and for some reason declining in 19Q1 market share for servers, while desktop and laptops are modest but showing healthy market share growth: https://www.extremetech.com/computing/291032-amd-gains-marke...
While ARM is announcing architecture specific flaws beyond basic Spectre: Meltdown (CVE-2017-5754) and Rogue System Register Read (CVE-2018-3640, in the Spectre-NG batch but by definition system specific): https://developer.arm.com/support/arm-security-updates/specu...