It may increase IGF1 a little (assuming naturally produced estradiol works the same way as topical, which I think I have read before, but oral estrogen can have opposite e but if you use nolvadex it will be more than negated.)
https://academic.oup.com/edrv/article/25/5/693/2355205 But people don't report small increases in IGF1 to do anything in terms of gains.
The feedback inhibition and increased IGF production of high estrogen can be pronounced with a triple stack of GHRP, GHRH and infused somatostatin and there is a study done on this specifically, and they used exogenous test to make for conversion to E2.
The above sentence sounds cool if you like to hang on to the balls of e.g. GH and cheer for him and his fake avatar. Why? because it is a stupid idea which nobody would do in real life. For one you'll feel like crap. You'll be walking around bloated, with high blood pressure. You'll increase risk of heart attacks and increase the risks of blood clots forming. So yeah if you have never done a cycle or even lift but want to sound cool on a forum you can claim high estrogen works. (GH didn't know about that study though and though high estrogen alone increases IGF...). If anyone claims high estrogen works then just show them data that estrogen works against free testosterone since it binds to the androgen receptor.