The word television is composed of two words, tele meaning far away, and vision, self explanatory. So anything that lets you see stuff that’s far way, it’s technically tv. Everything that’s streamed live would match that definition, even if it’s pre recorded, as it was on traditional tv. So I guess Twitch, YouTube streams are our modern tv. Netflix and other recorded media that’s distributed trough internet would not, as blockbuster was not tv back then either.