It would appear that the death of MQL's is gaining steam. PQL's seem to be all the rage now.
Many of the fastest growing SaaS teams over the last 10 yrs have leveraged the concept of the PQL (Product Qualified Lead) but they rarely talk openly about it as it’s been a material competitive advantage for their Sales & Marketing teams.via LinkedIn
The reality is that Machine Learning can really help you define the true division line of who is likely to buy and who won't. It really saves time and energy for your sales group.