OK, according to the wiki you linked, it defaults to using google's 8.8.8.8 and 8.8.4.4 servers as its upstream when you install it.
You'll need to edit your acrylic configuration file (AcrylicConfiguration.ini), and change PrimaryServerAddress=8.8.8.8
to specify your Pi-hole's IP address (check that address is correct) : PrimaryServerAddress=192.168.0.175
also change the entry for the secondary server SecondaryServerAddress=8.8.4.4
to specify nothing (don't erase the line, just remove the 8.8.4.4) SecondaryServerAddress=
1- Applied your changes to the .ini file
2- Set up my IPV4 DNS to point to 127.0.0.1 and the IPV6 DNS to ::1 (as per the tutorial linked in the first post)
Result : I can access the local server and workspace but the ads are not blocked anymore
Alternative : If I remove the 127.0.0.1 and ::1 DNS changes, I cannot access the local server anymore.
For those encountering the same issue there is a simple fix
just use the command : valet domain localhost
all your local development URL will end with .localhost and google chrome and firefox automatically resolves them to 127.0.0.1 so there is no need to go into your adapter properties and change the DNS, just leave it to automatically resolves
It does restrict you to only use .localhost domain