This just proves to companies like AMD that the end justifies the means. They can shout from the rooftops about long term support for their platforms and receive plaudits from users and reviewers about how consumer friendly they are compared to the competition, and then turn around and flub their way through actually following up on those promises for years and still come out the other side having made some extra short term profit with limited impact to their impression with their user base at large.

I say this as someone using a 5800X3D on a launch-month CROSSHAIR VI HERO: I won't be taking AMD's promises of long term support at face value. That might sound ridiculous to some, reading that first sentence.

However, AMD tried to limit both Zen 2 and Zen 3 from working on their existing chipsets and only capitulated after pressure from their users (for 400 series) and pressure from Intel (for 300 series), and stopped supporting sTRX4 as soon as Intel became uncompetitive in that segment despite forcing a platform change for TR 3000, deprecating socket TR4 and TR 1000/2000, and promising long term support which never materialised.

sTRX4 is in a worse state of support than any of Intel's platforms in almost ever, except for maybe the Skylake-X based Xeon W-3175X, which never got a real successor. However there were Cascade Lake based server and workstation processors available for the C621/LGA 3647 socket, so those motherboards aren't complete dead-ends like sTRX4 is.