Seems there should be some mention of the SQL Server bit data type, which internally is implemented as a bitmask.  I guess it's a matter of opinion whether a single int column with a bit mask is "cleaner and neater" than 32 individual bit columns, but they both take (just about) the same amount of space in the row.

To me the big reason for using a bitmask was to save space.  With the bit datatype, that reason is gone, and I prefer the clarity of individual columns.