I imagine the have just platforms in place with no shelters, seats, signage, ticket machines, etc. They serve nobody, so there is no loss.
The Racecourse stop was only ever going to be used on race days, possibly with shuttle buses to the main stand area, but its a shorter walk from Sandyford stop and a cheaper fare from the city (one less zone).
Brennanstown is in the middle of nowhere, surrounded by fields.
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