Get a base iPad for media consumption, +/- Smart Keyboard. It will be significantly faster than the 2015 MacBook, and handles media consumption better too. For example, Macs are not allowed to locally download media files from Netflix (to watch on the train or plane or whatever), but this is allowed on iPads.
BTW, I own an iPad Pro 2017 with Smart Keyboard and Core m3 MacBook 2017 (which is much faster with better keyboard than the 2015). For pleasure trips I take only the iPad Pro, partially because of the better media handling. When I used to take business trips and needed specific macOS applications, I would take BOTH the MacBook and the iPad Pro, the latter for its media handling and also to double as a secondary monitor for the MacBook via
Sidecar. (BTW, the 2015 MacBook doesn't support Sidecar.)
Low end Chromebooks generally are junk. They will often be fast enough but the feel plus fit and finish just aren't great. Often the trackpads aren't very good either, and here in Canada they often come with multi-lingual keyboards, which suck. Well-constructed higher end Chromebooks do exist, but they can be costly.