Have the rules been changed though? These on-line education restrictions (known as "Full course of study") had been in the law for a while, see 8 CFR 214.2(f)(6)(G) [1]. What ICE has done is a temporary suspension of enforcement. Now they just resume normal operation. You could argue they had to suspend it for longer but accusing them of changing rules seems bizarre as what you actually want is for them to change rules (because current rules say that F-1 students cannot do full-time on-line classes).
For F-1 students enrolled in classes for credit or classroom hours, no more than the equivalent of one class or three credits per session, term, semester, trimester, or quarter may be counted toward the full course of study requirement if the class is taken on-line or through distance education and does not require the student's physical attendance for classes, examination or other purposes integral to completion of the class. An on-line or distance education course is a course that is offered principally through the use of television, audio, or computer transmission including open broadcast, closed circuit, cable, microwave, or satellite, audio conferencing, or computer conferencing. If the F-1 student's course of study is in a language study program, no on-line or distance education classes may be considered to count toward a student's full course of study requirement.
1. https://www.law.cornell.edu/cfr/text/8/214.2
