I am not sure if this is sarcasm or not in an attempt to elicit a response. No. This would not be the case. If anything it would improve performance on older hardware.
I have many devices working with the 2.4 Ghz band. The mesh uses a dedicated 2.4 Ghz antenna specifically for running up to 50 devices on a single mesh hub in the 2.4 Ghz band. I have had several “high-end” routers, none of which have shined a light to the stability of the Velop mesh. It has been a godsend.
Also, user_4064251085 is having the exact same problem. So unless he also uses a Velop mesh network, then I doubt it is related. There are multiple people reporting these issues. Just look at the issues tab on the Github repo for the project.
So no, this is not the case.