is multus-cni v3.9.3-thick-amd64 recommended for THICK Plugin?

[hikkart]

Hi Team,

https://github.com/k8snetworkplumbingwg/multus-cni?tab=readme-ov-file#thin-plugin-vs-thick-plugin

Above link says thick plugin is introduced with 4.0 release

But we have v3.9.3-thick-amd64 with stable-thick-amd64 tag.
Is it OK to use v3.9.3 version for THICK plugin?
If yes, why does the documentation refer to 4.0.

Deployment Yaml: https://github.com/k8snetworkplumbingwg/multus-cni/blob/v3.9.3/deployments/multus-daemonset-thick-plugin.yml
Container Image: https://github.com/k8snetworkplumbingwg/multus-cni/pkgs/container/multus-cni/61872617?tag=v3.9.3-thick-amd64

In addtion, Daemonset yaml v3.9.3 with container Image: v3.9.3-thick-amd64 is installing multus binary instead of multus-shim (as in v4.0.2) on each node.
Please clarify. Thank you