LFS developers can do whatever they want. We will always have two sides with different point of view, and each person (what includes me) thinking they have the "most right" opinion.
In fact, we cannot forget that Live for Speed is a racing simulator. Allowing undetectable cheating can really mess up the user experience. It's easy to detect many of existing cheats, but what happens if the user add 1% power to his car? It's almost nothing, but can save half second, what can be the difference between first and other place.
In other hand, blocking some addons can be a suicide. Unoficial addons, as the name says, are not official, but are not prohibited. If you see in the board index, there's a section only for them.
I think Scawen can do some changes in cheating system. Actually is not possible do run a modified server without a password (or I don't know how to). So, the only option to have players joining in a tweak server without pass is downloading from external providers. Maybe he can include a way to select with "protections" are enabled or not in a server.
Then, admins/players who dont want any kind of modifications can simply block them enabling all anti-cheating options. Admins/players who want to allow players to change car specs, or other modifications can enable separately.
Live for Speed is not made only by players who wanna race, or only by drifters, cruisers, or whatever. So, options should be there to consider all possibilities.