This will undoubtedly hinder the public's ability to get information from the agency. On top of eliminating a far less burdensome method of communication, submitting through the FBI's portal requires including personal information, including phone number and address, and agree to the site's terms of service. Nested in the TOS is the requirement that users only make one FOIA request per submission per day.
As The Daily Dot points out, there is no legal limit on how many folks can submit daily, and since one could just send in other requests via fax or snail mail, the FBI isn't preventing people from making more inquiries. But it does put enormous onus on the requester for little apparent reason.
"It's a huge step backwards for the FBI to switch from a proven, ubiquitous, user-friendly technology like email to a portal that has consistently shown problems, ranging from restricting how often citizens can access their right to government oversight to legitimate privacy concerns," Michael Morisy, co-founder of the public records request tracking nonprofit MuckRock, told The Daily Dot. "Given that email has worked well for millions of requests over the years, this seems like a move designed to reduce participation and transparency, and we hope that the FBI will reverse course."
Citizens and groups have sued the FBI on behalf of FOIA requests to facilitate its review and release of documents. Last December, VICE brought a joint lawsuit against the agency alongside 50 inquiries related to its activities and disclosures immediately leading up to the election. But deliberately using outdated technology to slow down the process isn't a new strategy for government agencies, either: In July 2016, the Department of Justice was sued for refusing to upgrade their decades-old machines, thereby deliberately prolonging the process.