Nope. GDDR7 is getting to what HBM2/e is already capable of and was doing 4 years ago, and HBM3 is already in production.
2019 the Radeon VII has HBM2 1,024GB/s.
2020 the MI100 has HBM2 1,228.8GB/s
2022 the MI210 has HBM2e 1,638.4GB/s
Nvidia has an H100 with HBM3 that will do 3,000GB/s.
When you consider that the Vega 56/64 back in 2017 had 8GB of HBM2 starting at $400 and the VII having 16GB for $700. I don't think that HBM is crazy expensive. For RDNA3 there is the packaging issue. Would be coold if AMD could 3D stack the MCDs onto the GCD so they have room for HBM3