No, it isn't. Indentured servitude was slavery. It just wasn't chattel slavery.Indentured servants agreed to a contract to provide labor for a set period of time in return for transport to the US. Once their indenture was over, they were free.
They were not bought and sold, their children were not sold off, they were not whipped
To imply that it equates to slavery is insulting
That form was introduced to America by a black dude.