The tragic thing is, according to the video's narrative, AMC has made some very good shows since TWD - HCF, Lodge 49, and The Terror, which were all critically well-received. Critics even liked the Preacher adaptation. But audiences just don't seem to care about AMC anymore besides Better Call Saul.
The Terror and Lodge 49 are both great, but AMC also had Better Call Saul, which was incontrovertibly one of the best shows on television and, by the end, the acknowledged successor/extension of Breaking Bad --- which is just to say, until very recently, AMC still had Breaking Bad as a going concern.
Maybe it just shows to go you that the make/break for these networks isn't prestige content so much as broader business execution issues.
Lodge 49 was excellent. It was a shame that they dropped it.
Also, while trying to remember the name of Jim Jefferies' very original show, Legit, I looked at a list of FX original shows and they really have had an astonishing number of high quality shows.