Of course it's regarded as revisionism by "mainstream" historians. Basically all of academia is the playground of liberals and gay elites so anything that is accorded the stamp of approval by university connected historians is suspect.
Can you cite sources for your figures?
The Nazi campaign against homosexuality targeted the more than one million German men who, the state asserted, carried a "degeneracy" that threatened the "disciplined masculinity" of Germany. Denounced as "antisocial parasites" and as "enemies of the state," more than 100,000 men were arrested under a broadly interpreted law against homosexuality. Approximately 50,000 men served prison terms as convicted homosexuals, while an unknown number were institutionalized in mental hospitals. Others—perhaps hundreds—were castrated under court order or coercion. Analyses of fragmentary records suggest that between 5,000 and 15,000 homosexual men were imprisoned in concentration camps, where many died from starvation, disease, exhaustion, beatings, and murder.
Thus, my apologies; I misread another source as saying that 50,000 to 100,000 were sent to concentration camps. But it still appears that homosexuals were not treated nicely by the Nazis. And the top Nazi leadership wasn't particularly gay. Ernst Roehm was; but wasn't he one of the ones liquidated during the Night of the Long Knives, when the Nazis eliminated the leadership of the SA -- a purge justified by the Nazis in part due to the alleged homosexuality of the SA leadership?