Welcome to Lightroom CC 7.2!
I have lost count of the number of crash reports I have sent in. Must be approaching 50? The problem I am having is very tiresome. If I leave 7.2 inactive for more than about 3 minutes, it crashes! Send a photo to Photoshop to work on it - Lightroom crashes! Look up a name on the internet before exporting a photo from 7.2, it crashes. Answer the door bell, it crashes. Make a cup of coffee it crashes. Answer an email, it crashes. I am tempted to switch it on and do nothing and when it crashes send in the crash report. Then switch it back on and wait for it to crash. Just to see how many times an hour I can get it to crash. But life is too short for that.
What is the point of adding my address to crash reports if Adobe are not going to respond.
I can't speak to why you haven't been contacted. Also, this is a User to User forum. If you want to catch the attention of Adobe QE et al then best you submit details of your crash to https://feedback.photoshop.com/photoshop_family/categories/photoshop_family_photoshop_ligh troom
I recommend you included the following as a minimum:
1. Operating System
5. Are you running Real time virus software?
6. Have you tried disabling the GPU?
7. Have you tried reset Lightroom preferences? See https://helpx.adobe.com/lightroom/help/setting-preferences-lightroom.html
The easiest way to provide 1-4 is to open System Info in Help menu and take a screen capture such as below