Depends what club you support or what level of football you're talking about, I suppose.
Obviously the clubs I watch most often is Spurs and I wouldn't agree that is the case, if anything there's been a decline.
...also I think some positions have improved, some have declined
Of course not every footballer is better than the previous one, otherwise these records would be broken every season or three. The main idea is that the overall average continues to improve. I'd say national teams are a great example: the 2014 edition of the Liechtenstein national team is going to suffer against say '74 Brazil, but you'd have to think 2014 Germany walks all over '74 brazil, or '94 brazil for that matter. I mean you could probably argue Spain from 2-6 years ago beats the world cup winning German side, but I don't think that is firm evidence against the idea that on the macro-scale, football is getting better all the time.