Activate Google Analytics in SharePoint Online site

Activate-GoogleAnalytics.ps1

param(
   [string]$SiteUrl,   
   [string]$UserName, 
   [string]$Password   
)

. ".\UserCustomActions.ps1"
 
<#  
.SYNOPSIS  
    Activate Google Analytics        
.DESCRIPTION  
    Activate Google Analytics in Office 365/SharePoint Online site 
.EXAMPLE
    .\Activate-GoogleAnalytics.ps1 -SiteUrl "https://tenant-public.sharepoint.com" -UserName "username@tenant.onmicrosoft.com" -Password "password"
#>


Function Activate-GoogleAnalytics([string]$SiteUrl,[string]$UserName,[string]$Password)
{
    $context = New-Object Microsoft.SharePoint.Client.ClientContext($SiteUrl)
    $context.Credentials = Get-SPOCredentials -UserName $UserName -Password $Password
    
    $sequenceNo = 1480
    #Insert your Tracking code here or specify valid Tracking ID
    $TrackingCode = "(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
  (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
  m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
  })(window,document,'script','//www.google-analytics.com/analytics.js','ga');

  ga('create', 'UA-XXXXXXXX-X', 'auto');
  ga('send', 'pageview');"

    Add-ScriptLinkAction -Context $Context -ScriptBlock $TrackingCode -Sequence $sequenceNo

    $context.Dispose()
}


Activate-GoogleAnalytics -SiteUrl $SiteUrl -UserName $UserName -Password $Password

Can you please confirm this is scoped so that any site or sub site has this JS injection.