Can't image that this is the case with my Plugins since I use it on my Development machine like this.
Are you sure we are talking about the DVB-Driver and Nvidia-Driver Plugins that were introduced with Unraid 6.9.0beta35
There are two answers to this question:
No, simply install both Plugins and you should be good to go.
Yes, if you like it to have everything included into one build then you can use the Unraid-Kernel-Helper.