True, but I would rather compare the MS425 to a C9500 since the stacking can be remote. If everything is in the same closet and you can tolerate some outage during upgrades then sure I would fully agree.
I also heard Meraki would be keeping their own product models too.
My own point is more about that there isn't for example a 'MS435' model that expands on the features of the MS425 so it would be strange if Meraki would EOS the MS425.
Only when Meraki would fully support C9500, C9300 and C9200 natively I could see a scenario where current models could be EOS'd.