ABM is honestly a scam. It's just a fancy marketing guy word for tying 2-4 (depending on how you want to demarcate) standard ad tech tools together.
True ABM is platform and ad tech neutral, its almost entirely strategy and deep work in winning over every stakeholder at play with a completely customized content, advertising, and outreach experience. Unfortunately, many scam artists and platform developers or just uninformed marketers hijacked the term and created impressions on the strategy like the one you have and mention above...