I am definitely happy to see they allowed a gay character like the Green Lantern in DC to finally make take the forefront in the DC Universe.
Yes, but if they have Batman kissing Superman in bed then I'll bomb the DC offices with Kryptonite and the Joker's laughing gas! There is such a thing as going too far. Without wanting to sound homophobic, it is one of the things that put me off from watching the "Dr Who" spin-off "Torchwood" when all the main characters appeared to be gay or bisexual.
It would have been interesting in knowing Herge's view on current comics and how he would have handled such a theme in the modern era. Many current Belgian comics aimed at children do feature scenes of characters in bed together and it's clear what they have been up to. There is a strip called "Tamara" by Zidrou (Benoît Drousie, writer) and Christian Darasse (artist) about an overweight teenager and her search for love. It also looks at issues like racism and teenage sexuality. I believe that there is a sub-plot about a boy coming to terms with being gay as a result of a crush on a handsome fellow pupil. Such themes would have been unthinkable back in the 1950s and 60s when Tintin's success was at its eight.
Seriously, would he have ever come up with a scenario dealing with gays in much the same way as "Sharks" deals with slavery or "Emerald" with bigotry towards gypsies? or would he have thought that such a theme had no place in a family-oriented strip such as his? The current "Blake & Mortimer" books do not appear to do so, so maybe that is a pointer.