Ooh, 21st Century Skills. Apparently critical thinking is one of these but it constantly exasperated me when I see uncritical praise of EdTech in (English) language teaching. Instead of jumping on the new thing, how about some consideration of the following points.
Web applications should involve minimal and preferably no sign-up or tracking.
Sign-up that require login for monitoring student progress are fine, and students should not feel compelled to unconditionally share this information with others, including teachers. The same liberty as the choice to remain silent in lessons should be extended to use of internet-based services.
This also means that having students upload to YouTube, Instagram, etc. be limited. If uploads are required, an institutional login should be used, although this is imperfect and a private server would be better. This requires greater internet/computing abilities than many have, though it is possible to learn such skills in a weekend. Is it possible for students to gain such time to be critical of internet privacy issues.
Technology should be controlled by the user, not the vendor.
Students should know whether content created using software belongs to them or the vendor. They should know whether the vendor has access to their data, including read/write/sharing permissions. They should be free to refuse this.
Students should not be required to use their own data transfer budget unless agreed prior to the course.
This is a hidden cost. Institutions/organisations should provide secure Wi-Fi.
Technology should be a last resort, not a first.
It is tempting to load a lesson with flashing lights, bells and such, but unless real communication and actual learning occurs, the technology would appear to waste time.