The scam ad says "gimp.org" but if you follow it, the landing page is hosted at gimp.monster. It's a clone of the proper gimp.org with a the download instead pointing to who-knows-what .exe on Dropbox.
WHOIS gimp.monster has WHOIS-guard, but the Icelandic "privacy" address turns up a bunch of Reddit links about scam sites. Namecheap is the common thread, but that's hardly a lead.
I've seen both Amazon and Best Buy URLs on scam ads.
URLs are sacred. Please don't fuck with them. Please.
That was never the intent of hiding the path, it was and is to help users identify what a site’s domain actually is. To distinguish malicious sites with recognizable domain-like strings in/overlapping their paths as well as malicious sites with recognizable domains as subdomains. It’s not a panacea, but it’s effective. Chrome (and IIRC Firefox) also experimented with similar approaches before ultimately splitting the difference with higher contrast text for the domain.
Maybe the Reddit user took the screenshot on a separate occasion from when they clicked the malicious link, and the ad changed in that time (currently I can see an ad for GIMP, and it links to the official domain, and the linked Twitter thread linked by @pmoriarty says the attacker is actively changing things). The only other explanation I can think of is that the official GIMP website has an open redirect vulnerability.
EDIT: Other users here are reporting mismatch between display URL and landing page URL, so it's not just the Reddit user.