Get-CsOnlineUser - Cannot filter with boolean attributes due to casting errors

The ticket is still open. Their support resource provided a wrongful suggestion using "$true" as true and "$null" as false. This is not a valid solution as any non-empty string would resolve true.

For now , the two viable workarounds I identified are:

1. Using any non-empty string (ex. 'banana') as true and an empty string '' as false.
Not ideal and a bit of a hack using an empty/non-empty string as my flags.

2. Using Where-Object {$_.EnterpriseVoiceEnabled -eq $true} instead.
Also not ideal as it is way less efficient as it first fetches the non-filtered results to then discard a bunch via the Where-Object.

Still waiting on a better fix.