PeeringDB / Interconnect - Can someone please clarify

I have another post where I requested guidance to set up a Site-to-site VPN to connect two data centers between SF Bay Area and Chennai, India:
https://www.reddit.com/r/networking/comments/a1ckbf/connecting_datacenters_between_us_west_coast_and

I got some really good ideas on different ISPs to reach.

Here's a follow-up question.

I know there are these PeeringDB type of sites which show the networks that different ISPs / data centers peer with. Can I query a PeeringDB and figure out which data centers / IP transit points peer with each network, so that I can find the best route with limited hops to set up the interconnects at both end-points with minimal latency / hops? Isn't that one of the purposes of a PeeringDB or is my understanding just plain wrong? Would appreciate if someone can chip in.