Assuming your thesis that taxing wealth encourages riskier investments for a minute. Why is that a problem? Isn't putting money into riskier assets a good thing

Assuming your thesis that taxing wealth encourages riskier investments for a minute. Why is that a problem? Isn't putting money into riskier assets a good thing for long term advancements in asset classes with high potential reward? It doesn't seem like low risk investments like sticking money in the bank to be lent as mortgages or investing in government bonds are as good for humanity over the long term.