Ion Masternodes have been active since April 2016. The trolls here called it a scam at first but as the coin/project is coming up to 3 years SCAM has evolved into this is a shit project, incompetent devs with anyone that likes the project being called a shill 

In terms of proftability just seen this https://news.masternodes.pro/masternodes-pro-top-10-ranking-01-12-2019/

I suggest you do some homework checkout the website https://ionomy.com/, join their discord https://discordapp.com/invite/vuZn7gC and of course play some games. Use discord to ask questions as that's where the devs and community live