I personally dont think that buying some sexier lingerie encourages peoeple to start sex life early. I was buying myself some panties when I was about 14-15, which were relatively sexy, for myself in normal shop. But because I was well informed about sex from my parents and school, I actually started with sex life late - really when I was 20, when I was in my first longer relationship. Cannot say I was untouched, kisses and some touching, yep. but not real sex. And the touching did not go too far either.
And I believe that well informed teenager will approach sex more carefully. I mean real sex, because there will be self exploration.
I would help a daughter if she asked me for help, but would not approach her about that first, when it comes to sex toys. I would talk to her about sex and protection and things like that for sure and I would mention lube, anyway, because this is really important. I would not let her get this info only from the internet. Who knows what she may find. And I remember using things like body lotion, olive oil, baby oil when I was teenager, none of which are that propriete.
The teenagers are likely trying it, so if my daughter asked for help, I would really do it. I remember all the things I used to try, just to get some stimulation and the hairbrush handle was the most harmless one. There were other things too and some erhm I guess even amusing stories. At least now amusing, but back then they were not. So I do not think that sex toys encourages sex automatically either. Actually having sex toys for me is a way of surviving long distance relationship. Because this way I get some fullfilment and I do not go with whoever is available. And the hairbrush etc did the same job for me in the past as a teenager