Massive Influx of Total Links - But External Links are Dropping?

[EdenPrez]

Hey Moz Community,

I was checking out the Links on one of my client's sites, as they were hit with spammy external links about a year ago, and noticed a large influx of Total Links to the site. According to Moz, external links have actually dropped over the last few months, so I can only assume they are internal links.

But, I don't see how my client could add so many internal links over the past 5 months, as they don't do much besides upload new products (they're an ecommerce clothing retailer) via Shopify. They haven't added much over the past half year either. Total links were about 130K in Oct 2019; today, the site has almost 1 million.

I've attached some screenshots for reference via Moz to better illustrate the issue.

Appreciate any insights into this. Thank you in advance!

hhCCUsk lyGltZD

[EdenPrez]

Any insights would be greatly appreciated - thanks again Moz community!