None of the streaming services (Crunchyroll, Hulu, Netflix) offer BD-level bitrates, but they do offer 1080p. For offline viewing, some streamers allow downloads (lower bitrate, but legal).
For fans, this was – after multiple fake finales, Gintama truly ended here (ignoring the later 2021 The Very Final film, which is an epilogue). gintama22018bdripx264regretetmovies upd