I mostly think the problem with these things is not the replaceability of the LEDs but the hideousness of the fixtures. This (and the fact that the fans will obviously perform very poorly) is the reason not to get the fans pictured in the article.

LEDs mean that the light itself is cheap so you can basically ignore energy usage concerns.

Generally, I think it is better to have:

- multiple dimmer sources of light instead of a single bright central light

- shades to diffuse the light (or lights pointed at walls or ceilings) instead of having bright point sources

- some ability to adjust brightness (eg reasonable quality dimmable LEDs)

- replaceable ordinary-looking bulbs from a reputable source (if you have 10 bulbs, it will be sad if one fails and you can’t get a similar looking bulb with a matching brightness and temperature)

- lamps, potentially wired up to light-switches for the room, which can provide light closer to where people will be and from better directions (eg maybe you sit somewhere where you can’t or don’t have a nearby wall-mounted light so a lamp can provide good light for reading). This also works in rented accommodation where one has less control over built-in fixtures.

- general considerations as to the purpose of the room (eg brighter cooler directable ceiling-mounted spotlights are more useful in a kitchen than a drawing room)

- sparing use of can lights (though this can be difficult if ceilings are low)