Although the fans have gotten larger (and hence the ingestion of bird(s) more likely, the latest generation of wide cord fans have far better bird (and FOD) resistance than the earlier generation of fans. The composite fan blades on the GE90 have proved particularly robust (I remember a press release where the GE90 had gone over 10 years since EIS without having to scrap a fan blade due to impact damage).
So, while bird strikes are increasingly common, the rate of significant damage/thrust loss due to bird strikes has actually dropped.