Masternodes are just people's wallets running with masternode=1 in the config. Plus you need 1000 coins in there to make it work so a lot easier to attack fullnodes than masternodes.  Plus taking over masternode network you couldn't actually make any $, takover BTC nodes and you can.   There is zero merit to all this crap about masternodes being 'easy to compromise' or being 'centralized', it only works if you have 20 butthurt XMR drones who try to make it true by posting it 2000 times - it's just a lie.