Could generating SSH key be simplified by using OpenSSH for cross platform solution

The windows 10 version 1803 has contained an internal OpenSSH, so could the page GitLab and SSH keys be simplified for using OpenSSH to generate SSH key?

Because this OpenSSH is default disable, ref MSDN OpenSSH key management, so need a PowerShell running as administrator to execute

Get-Service ssh-agent | Set-Service -StartupType Manual

My experience for doing ssh-add is similar with the page's description but must run Start-Service ssh-agent first.

The section "Use SSH on Microsoft Windows" should be put in "Prerequisites". Although it's good to know PuTTYGen can try when ssh-keygen and ssh -T are doing failure. But it's frustrated because it's GUI and don't use above command lines. It's not easy to troubleshoot any problem from different setting steps.