Right now there are many ICOs coming out, is it really safe to participate in any of it and spend that much? In participating ICOs I have high hopes that these coins could be the next Bitcoin or other currencies that are really going up in the market.
It is safe if you are genuinely ready to take on the risk. Just like stocks, if you do it enough you will pick winners and losers. Just position yourself to make the winners upside enough to overcome the losers. Because of the potential for high reward, the risk is equally high. Don't invest a lot more than you are willing to lose.
Yes you probably have summed it all up for him. Rule of thumb for investing, only invest what you can afford to lose. Other than that is non advisable.
Well OP never really clarified in what form of participation his speaking of, it can be participation in bounty programs and not investing.
Investing is also not advisable to ICOs managed by non trusted managers and dev team.