One contained thread is not spam. We're far from back when there were lots of new different people making high elf threads. Now they're relegated to one just about.
What we're seeing more of is the one thread on official forums will get report abused, thus requiring another one to open up. Why report abuse in the first place? Because there's a set of agitators who can't help but get themselves into fights on the internet over people requesting high elves.
We're also now seeing more threads about 'against high elves' than the one single ones active for them. You keep talking about spam but for instance this forum itself contains only this thread.
You can find many more recent anti-helf spam threads than pro high elf threads.