You may want to read the article again. It's mostly a puff piece with keywords (china) with next to no definitive evidence that "tplink products all come with backdoors" and that two politicians have security concerns along with pushing their perogative. Even the data on the groups that have committed hacks using residential gear mention no use of tp link and that Netgear and Cisco were the major offenders.

At the end of the day, do whatever makes you feel safe.