I understand the general concept of this thread, but disagree with the intended advice. To think that a pile of "raw" tracks has a better chance of sounding better than "processed" tracks to me seems pretty slim, especially given the equipment, recording spaces, general knowledge, etc, etc of the average "do-it-yourselfer" recordist. I think a better approach would be to know more about these FX, plugins, rather than to dismiss them across the board.
Maybe a better direction would be to know how to use them, but keeping them unoticeable in their use. It is a common statement, that typically a compressor is being used correctly if you don't "hear" it. Being basically a fancy volume control, why would you typically want to hear artifacts of volume adjusments? You wouldn't, but to say many, if not most tracks could benefit with the correct use of compression would be correct.
The same would go for:
1. high pass filters to clean up things, etc.
2. Low pass to keep your dog happy.
3. the use of reverb to create space (on DI sources as an example) and the blend tracks.
4. Parametric or notch filtering to rid of noises, syballents, annoying frequencies.
5. etc, etc...
I view these items nothing different than selecting a particular mic or preamp to gain a desired result. If you unitentionally, "hear" the mic, than most likely, it is a bad choice or just maybe a bad mic.
In other words, if all we had to do was just record raw, dry tracks, no processing and just blend them together adjusting volumes, we might as well do away with mastering too.
But, since I wash my clothes in reverb, I understand the "overuse" syndrome and support the "sparingly" remark. Use it to compliment, add, reinforce or even create. Don't use it to CREATE a production. Weird eq'd, autotuned, reverberated and compressed vocals are only interesting for the first line of the song. Unless you know the rules, you can't break them first...and for the ENTIRE song either

.
That's why much of the music nowadays is really poor (in MY opinion), because it IS recorded good, but the music isn't there. Too much relying on cool sounding FX or just relying on production. But, not to say that kind of "sound" doesn't have its' place too. Think Alan Parsons with nice but simple synth sounds. But then, the chord changes aren't shabby either.