No, just miners and mining pools seeing the bigger picture. We have already seen an increase in our number of active masternodes, that recently lead to a new ATH (5007).
Those new masternode operators have most likely anticipated the upcoming change in masternode rewards (+9% in masternode rewards over 4.5 years) and were responsible for buying up a part
of Dash circulating supply, to setup these new masternodes. Which caused reduced sell pressure on the market.
 
So far Ryan Taylor's plan to improve Dash Store of Value by making masternodes more attractive to invest in, while addressing Dash expanding circulating supply problem, seems to work as intended.
There is zero evidence of miners switching to masternodes, being the cause for our increase in active masternodes. Just a whole lot of assuming and opinions being thrown around in here.