The wired review is much more negative, if you want a contrasting view: https://www.wired.com/2017/03/review-nintendo-switch/
Yikes, that sounds disastrous.
Nintendo might be able to adjust the gain on the Joy-Con radios, at the expense of battery life. They might have to re-certify with the FCC to do so.
This could be a software bug that is fixable with an update, but that seems unlikely considering it affects the left controller more than the right one, which would indicate a hardware design flaw.
And if that’s not enough, there’s also the “fact” that many of us want to play other Switch games this year, so why wait?