This is not coming as too much of a surprise as some of the first winter 2018 season announcements have been conspicuously absent of mentioning ant Anime Strike branding or distribution.
While we wait to see if new shows internationally will still end up on it as part of the previous Noitamina and Animeism block ventures, right now those shows ARE available for viewing without the Anime Strike additional charge.
So if you have an Amazon Prime account you can watch things now without paying the additional $4.99 per month on top of it.