I mean it was pretty competitive almost two years ago, but AMD made a huge leap since then. Not sure why saying a two year old CPU is outdated is a controversial take.
One thing to remember is that cloud people are usually most concerned with price / performance. This is especially true with Fargate, where these are almost always running in an auto-scaling friendly scenario and usually things like RAM and I/O are at least as important as pure CPU.
Looking at things in terms of dollars / hour for your app tends to soften out the outdated impact unless you have a very compute-heavy workload.