That paragraph suggests that the productivity gain benefits workers (labour) as well as the owners, (of capital) because it creates jobs. But each of those jobs could be a low paid, low quality job; as is suggested by the following:
http://www.motherjones.com/politics/2012/02/mac-mcclelland-f...
http://www.theguardian.com/technology/2013/dec/01/week-amazo...
http://www.salon.com/2014/02/23/worse_than_wal_mart_amazons_...
Yes there may be more (or the same) number of jobs; as suggested by the paragraph. But each of those jobs could be lower paid and lower quality in terms of job satisfaction. So it may still be the case that a greater share of the productivity gain accrues to capital; instead of labour.
Rather than freeing us; our existing societal structures may mean that technology instead helps to create a story of inequality - a hollowing out of today's society with "barristers and baristas and no-one in the middle". Whether that society is a moral one; or even a functional one, is a separate question I suppose!