Stopping the network-dispatcher service due to slow boot because the GUI has one of its own, a viable option?

On a reddit post on r/Ubuntu titled Short guide to improve slow boot on Ubuntu (>=18.04) one of the options provided is:

Disable networkd services: If you are not a system admin you don't need this. Gui uses network-manger (and it has it's own dispatcher) anyway.

And the following commands:

sudo apt-get remove networkd-dispatcher
sudo systemctl stop systemd-networkd.service
sudo systemctl disable systemd-networkd.service

In my case network-dispatcher service is also causing slow boot around 20 sec but I was not able to understand the reason given above simply stopping it, are there any downsides to the above mentioned suggestion I should be aware of?

Pointers and resources would be great!