It is speculation - 100%
I view my speculation as calculated speculation given Angola wants to diversify its economy and MNB can pivot to include mining of phosphate for the EV market in a heartbeat because this is what they are geared to do. It is withing their immediate competency.
In my time investing I have seen so many struggling miners become tech companies overnight, iron ore miners become lithium miners, gold miners become REE miners etc.
I actually think it would be an opportunity lost for MNB if they do not expand.

This is a perfect storm brewing for phosphate producers.

Rock Phosphate Monthly Price - US Dollars per Metric Ton

Range

6m1y5y10y15y20y25y30y

Mar 2021 - Sep 2021: 51.250 (53.25 %)

Mar-2021Apr-2021May-2021Jun-2021Jul-2021Aug-2021Sep-202190.2596.71103.18109.64116.1122.56129.03135.49141.95148.41154.88US Dollars per Metric Ton