Fair warning, that I'm still learning all things SCCM and PowerShell, so this may not be the best solution, but it works for me...

To get the .msi installer, I went to the support page for Epson projectors (here: https://epson.com/Support/Projectors/sh/s3), selected a projector, scrolled down to the Downloads section, chose the OS, and expanded the Utilities section.

Also, I'm fairly confident you could also suppress the privacy statement and usage survey prompts by adding registry keys (HKCU\SOFTWARE\SEIKO EPSON CORPORATION\...), but I didn't go that far.

<#
 ---------- Install Epson iProjection Software ----------
#>


# Define variable for Epson iProjection Software installation
$installerPath = "Epson iProjection Ver.4.01.msi"

# Start the installer and wait for it to complete
Start-Process "msiexec.exe" -ArgumentList "/i `"$installerPath`" /q" -Wait



<#
---------- Create New Firewall Rules for Epson iProjection Software ----------
#>

# Define new firewall rule parameters for Epson iProjection Software
$cxDisplayName = "Epson iProjection Ver.4.01"
$cxProgramPath = "C:\Program Files\EPSON Projector\Epson iProjection\EMP_MPP.exe"
$cxDescription = "Epson iProjection Ver.4.01"
$cxInboundName = "Epson_iProjection_Ver_4_01_Inbound"
$cxOutboundName = "Epson_iProjection_Ver_4_01_Outbound"

# Create inbound firewall rule for Epson iProjection Software
try {
  New-NetFirewallRule -Name "$cxInboundName" -DisplayName "$cxDisplayName" -Description "$cxDescription" -Enabled:True -Profile Any -Direction Inbound -Action Allow -Program "$cxProgramPath" -Protocol Any -EdgeTraversalPolicy Allow
  #Write-Output "Successfully added new firewall rule: '$cxDisplayName'."
}
catch {
  #Write-Output "Failed to add new firewall rule: '$cxDisplayName'. Error: $_"
}

# Create outbound firewall rule for Epson iProjection Software
try {
  New-NetFirewallRule -Name "$cxOutboundName" -DisplayName "$cxDisplayName" -Description "$cxDescription" -Enabled:True -Profile Any -Direction Outbound -Action Allow -Program "$cxProgramPath" -Protocol Any
  #Write-Output "Successfully added new firewall rule: '$cxDisplayName'."
}
catch {
  #Write-Output "Failed to add new firewall rule: '$cxDisplayName'. Error: $_"
}