Hi Sean,
I'm afraid that isn't correct. There are many, many sources out there confirming that PageRank scores are no longer publicly available. Google Chrome, other browsers and 3rd party tools all pulled the data from the same source. I'm not sure where that tool pulls numbers from.
Here are some sources to confirm this:
1) https://searchengineland.com/google-has-confirmed-they-are-removing-toolbar-pagerank-244230 - confirms that this is tools, not just browsers where PageRank will no longer be available.
2) https://ahrefs.com/blog/google-pagerank/ - mentions commentary from Gary Illyes that PageRank still exists but not outside of Google.
3) http://www.thesempost.com/google-removing-pagerank-from-toolbar/
4) https://www.searchenginejournal.com/google-pagerank/159112/
5) https://searchengineland.com/rip-google-pagerank-retrospective-244286
Cheers.
Paddy