You must be tall, white or project a lot of status/coolness in your own instagram, because honestly this approach doesn't work for 99.9% of men that try (and it's not because of lack of trying!)
I’ve also messaged “thirst traps” from one of my meme/popular accounts to great effect. They don’t show me at all and nothing links it to my personal one. People would be surprised what various women respond to, a popular account is very similar effect to shiny material things that suggest currency/external validation/attention.
I would say that when messages get read at all, things go well for me. Instagram DMs are basically broken for hot or in-demand people (I know from how my own meme accounts works) so if I just tried to send DMs to every profile I saw from a dating app, most would go unread and likely never seen. Some targeting works.
(outside of dating apps and social media, I do many other things to meet women different ways, I’m not really preoccupied with the aforementioned methods but they are also there and romance has happened the way I described)
I would say that I too spend more energy than I would prefer in reaching these intimate outcomes with new women.