I get that you like the game, but that response doesn't seem reasonable.
If we were in 1987 and someone wanted to play some adventure games with a friend, sure, after KQ3, SQ1, SQ2, I'd tell them to give other Sierra games like LSL1 a try (while still warning them of the sexism and such).
However, we're in 2016 now, and there are just so many more, better (IMO) options. Like I said, if you're really into classic Sierra games, and you want to play all of them, LSL1 would be included. I played it for reasons like that. And if you're just interested in the history of adventure games, it's worth looking at. However, if you're just interested in playing an adventure game, for fun, for the intellectual challenge, or just for the audiovisual experience, I think there are many better options. With so many games out there, there are bound to be some better than others, and I think LSL1 isn't one of the better ones.
You talk about people now being "spoiled", but term could describe two distinct concepts.
One is that we've seen big advances in both game design and computer technology since 1987. So even if a game was state-of-the-art back then, people won't be impressed by it now. If you are making this point, then I agree, but I also think it's okay to be "spoiled" in this way. In another thread, Datadog linked
Arrival of a Train at La Ciotat. While that may be a very significant and influential event in film history, I still wouldn't recommend it to someone asking for movie recommendations. People today would expect sound, color, a runtime longer than a minute, and some semblance of plot or purpose. Those are unreasonable standards to put on films from 1895, but they
aren't unreasonable standards to put on films in general. I'm not diminishing Arrival of a Train at La Ciotat's historical significance by saying that I don't find it particularly entertaining and would rather see some other film.
You also seem to say that players today are "spoiled" by games being too easy now. I just completely disagree with that assessment. There are hard games and easy games now, and there were hard games and easy games in 1987. Also, I didn't actually complain about LSL1 being too difficult or use its difficulty as a reason for not recommending it.