I don't know about "leading platform" but it's one of a number of crowdsourced real estate investment platforms. I'm not familiar with Fundrise but others like RealtyMogul and RealtyShares require you to be an accredited investor, so unless your net worth is $1 million+ or your income is 200-300k, using those vehicles is not available to you. Of course you can always lie on the paperwork but I believe all that stuff gets filed with the SEC so I'm not sure how comfortable I would be with that. If you're not familiar with real estate to the level that would would invest in a home yourself, I'd encourage you to do some research. These platforms allow people to blindly invest in projects and assume the platform has already vetted the person or company asking for money. If the platform is a good one it will contain all the necessary financials, documentation, etc. for a particular project to allow you to do your own due diligence.
I use RealtyShares because I liked the package that platform provided. I would encourage anyone considering crowdsourced investing, who is an accredited investor, to sign up for multiple platforms and compare what is offered before investing.