Why did Microsoft deprecate (in this case remove, not actually deprecate) functionality without a replacement?

I'm sure a lot of the other functionality that was removed is probably useful as well, but specifically, I am interested in the following powershell commands:

Get-CsPSTNUsageDetailReport

and

Get-CsPSTNConferenceTimeReport

If you're going to remove the Powershell functionality, why not have a replacement for it in the Graph API?  The manual process is not very useful.  It requires a lot of manual work to get the results we need:

1. Log into office.com
2. Click on admin applet
3. Expand admin centers
4. Click on teams admin center
5. Click on legacy admin center
6. Click on reports
7. Click on export to Excel
8. Open file in excel
9. Extract lines specific to extensions that user is interested in
10. Copy lines to new spreadsheet
11. Email spreadsheet to end user

That's a lot of work to do once a week.

All of this is needed because for whatever reason there isn't any granular permission levels for the Teams/Skype for Business info.  Non-admin users can't access it, and it's an allow all access to account, or allow no access to account approach.  I don't want general staffers having access to everything in Teams and Skype for Business.  Even then, if they only had access to the call logs, I don't want them having access to the call logs for the business owner.

When will you have the functionality of this Powershell function in the Graph API?