Well no, they do not have a T2 chip. Apple says so themselves. However, the functionality the T2 chip provided is likely provided by the M1 SOC in the newer Macs, which I guess is what you mean. But that does not mean that they have T2 chips, or that the corresponding hardware inside the M1 Macs operates the same way as the T2 chip did in Intel Macs.Technically, yes they still do. However, it is embedded into the SoC. So my point and findings are still valid.
Again, most people here seem to agree that this is a PD-problem, and as far as I know, the T2 chip has nothing with PD to do.