Bootstrap is where the founder will be having 100% of the ownership. He hardly raised money from his friends and family.
In a funded startup, founders are diluting or giving the share (ownership) of the company to the investors.
In a bootstrap startup, all the decisions are taken by the founders. No one cannot have control and influence their decisions.
In a funded startup, every decision should be taken under the influence of the shareholders. Here founders are bound to accept the advice from the investors.
Always investors insist on profitability, so here founders cannot focus on an experiment with new ideas. Rather he has to work towards making money for the investors.
Now, you decide whether to have bootstrapped Startup or a funded startup.